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FQXi FORUM: Article Discussions
May 18, 2013

This Forum category consists of discussions of the articles posted on the FQXi web site. There is one topic for each article, and you're welcome to submit questions or comments. Please keep your posts relevant to the subject matter of the article.

A View From the Top
16 posts  •  created by Kate Becker   •  Apr. 8, 2013 @ 13:54 GMT
"My very brief and relatively uninformed comments are: 1. A lot depends on what you define as top and what you define as bottom. When society affects individuals, are individuals the bottom just..."

Classic Article: Black Holes, Paradox Regained
11 posts  •  created by Anil Ananthaswamy   •  Mar. 25, 2013 @ 12:52 GMT
"This sounds exactly like what Antony Valentini has been working on for some time now, where current quantum field theory, is only describing a "non-equilibrium" state which has relaxed out of a more..."

Quantum Biology: Making Waves in the Natural World
10 posts  •  created by Carinne Piekema   •  Feb. 20, 2013 @ 15:04 GMT
"Physicist can barely understand quantum mechanics as a mechanism so how an anyone talk about a quantum-biological process."

An Accidental Universe
650 posts  •  created by Bob Swarup   •  Jan. 8, 2013 @ 15:36 GMT
"Is the frequency of "our" universe perhaps 5.39121 x 10^-44sec ? Or does this mean that the universe is digital ? The choice of a "clock" is still the choice of human consciousness to compare his..."

The Cosmic Hologram
26 posts  •  created by Sophie Hebden   •  Dec. 23, 2012 @ 13:12 GMT
"Holograms are great! (I especially like the little hula girls) http://img3.etsystatic.com/000/0/6173573/il_fullxfull.298538135.jpg CIG Theory conserves information. CIG also offers a have a..."

The Brain's Time Illusion
37 posts  •  created by Carinne Piekema   •  Dec. 8, 2012 @ 11:50 GMT
"More proof that time is an effect of activity, like temperature . It is simply that we experience it as a sequence from past to future, but the underlying dynamic is potential condensing into actual..."

Embracing Complexity
6 posts  •  created by Graeme Stemp-Morlock   •  Nov. 6, 2012 @ 17:16 GMT
"Maybe the Hutterites are on to something ..."

Indefinite Causality
27 posts  •  created by Sophie Hebden   •  Oct. 16, 2012 @ 17:11 GMT
"Thanks for the update on this important research. My own essay in the current competition also addresses the role of spacetime and the ordering of random information in a dynamic causal..."

Time Dilation Gets a Quantum Twist
30 posts  •  created by Sophie Hebden   •  Oct. 1, 2012 @ 16:58 GMT
"Dear Sophie Hebden, Your article point out the correct way to deal with double slit experiment - Time is the important issue when we deal with space wave patterns. I wish you could read my essay..."

Charting the Post-Quantum Landscape
6 posts  •  created by Sophie Hebden   •  Sep. 3, 2012 @ 13:16 GMT
"This is an interesting article. My essay :"Rethinking the Double Slit Experiment" have discussed the three slits experiment. The cross-link angle establish the magic connection between two..."

Time to Go Retro
15 posts  •  created by Graeme Stemp-Morlock   •  Aug. 6, 2012 @ 17:46 GMT
"Yes, I'm confident CIG Theory is correct."

Killing Time
41 posts  •  created by Kate Becker   •  Jun. 28, 2012 @ 10:32 GMT
"Don Page is right that the dragon is the puppet of a more powerful master, and I believe that master to be information. (Shameless plug, this is the topic of my essay in the current contest.) I invite..."

Faster than Light
365 posts  •  created by Sophie Hebden   •  May. 22, 2012 @ 08:49 GMT
"An important text from Joao Magueijo's book that (unfortunately) I can only quote in French: http://www.parutions.com/pages/1-85-428-3935.html Joao Magueijo, PLUS VITE QUE LA LUMIERE, Dunod, 2003, pp...."

Melting Spacetime
17 posts  •  created by Graeme Stemp-Morlock   •  Apr. 30, 2012 @ 16:46 GMT
"Dear Graeme Stemp-Morlock, Joanna, all, Joanna Karczmerek- "If one could construct a theory where the entire spacetime including the time were emergent, then you would discover that time is an..."

Video Article: The Quantum Linguist
12 posts  •  created by Sophie Hebden   •  Apr. 8, 2012 @ 12:06 GMT
"Fantastic! The article is spare on details, so I went to the video -- but it's insanely rushed, like someone trying to explain 20th-century geopolitics in eight minutes. Here's the link for those..."

Black Holes: Paradox Regained
36 posts  •  created by Anil Ananthaswamy   •  Mar. 18, 2012 @ 13:42 GMT
"In fact, spacetime behaves very well at singularities, in the old framework of General Relativity. Singularities occur, indeed, as Penrose and Hawking proved long time ago. But physics and..."

Thermal Timekeeping
19 posts  •  created by Sophie Hebden   •  Feb. 28, 2012 @ 15:54 GMT
""Thermodynamics is an incredibly fundamental theory...," says Milburn..." Yes it is. Something that is not defined always increases so that we have a law of Nature, thanks to "the unargued statements..."

Video Article: The Patchwork Multiverse
9 posts  •  created by Anil Ananthaswamy   •  Feb. 9, 2012 @ 15:35 GMT
"If the multiverse is the only game in town, then we desperately need a new game."

The Cosmic Family Tree
18 posts  •  created by Kate Becker   •  Jan. 6, 2012 @ 15:23 GMT
"That the universe has elements related by causality is not new. That causality is limited by interaction distance is not new. Only Special Relativity is 'new'. Lucretius, ca 50 AD described in a..."

Behind the Shadows
3 posts  •  created by Bob Swarup   •  Dec. 15, 2011 @ 14:02 GMT
"The origin of the question is if space/time is constituted of grains or not. Holographic information is information on a larger scale as for instance the Planck length. A black hole is also an "event"..."

Why Did Nature Choose Quantum Theory?
27 posts  •  created by Maximilian Schlosshauer   •  Nov. 21, 2011 @ 15:03 GMT
"Hi Maximilian, The comment: "One of the most puzzling aspects of quantum theory is its built-in tension between reversibility and irreversibility." is at the heart of the transition between the..."

Video Article: Through a Glass Darkly
12 posts  •  created by Anil Ananthaswamy   •  Nov. 1, 2011 @ 15:00 GMT
"There is an interesting paper by Peres which connects the Kochen-Specker theorem with the F_4 group, or the 24 cell. The 117 projectors with the original KS theorem in 3-dim Hilbert space is..."

Video Article: Evolving Time's Arrow
26 posts  •  created by Anil Ananthaswamy   •  Oct. 11, 2011 @ 10:34 GMT
"Callender has been fighting special relativity for years but could not even think of a reason why the truth of the postulates should be questioned. The crimestop is absolute in this..."

Video Article: The End of the Quantum Road
15 posts  •  created by Bob Swarup   •  Sep. 23, 2011 @ 12:41 GMT
"This raises some interesting questions. I read Brukner's "Quantum State Preparation with Universal Gate Decompositions," which seems related to this matter. I am also curious as to whether this has..."

Video Article: The Destiny of the Universe
33 posts  •  created by Julie J. Rehmeyer   •  Aug. 21, 2011 @ 12:16 GMT
"This article led me to Discover Magazine (Kalmbach Publishing). A Beyond Einstein Section sparked my interest: "Is the Search for Immutable Laws of Nature a Wild-Goose Chase?" Editors of more serious..."

Testing the Multiverse
20 posts  •  created by Miriam Frankel   •  Aug. 4, 2011 @ 08:44 GMT
"Very positive to find an algorithm in order to change our point of view on the results of CMB, but isn't it a little too early to explain that these "spots" emergingd from the algorithm are results of..."

De-Spooking Quantum Mechanics
34 posts  •  created by Graeme Stemp-Morlock   •  Jul. 13, 2011 @ 16:53 GMT
""It's separability that you have to give up" - this was already realised by David Bohm back in 1952 and he devised a theory based on Louis de Broglie's "pilot wave" model which is fundamentally..."

The End of Time
85 posts  •  created by Kate Becker   •  Jun. 28, 2011 @ 12:53 GMT
"Dear Lowe, I have been trying to convey this very simple absolute truth about our inner most self that you have put forth in scientific terms. All answers lie in the answer to a simple..."

Readers' Choice: The Crystallizing Universe
94 posts  •  created by Kate Becker   •  Jun. 2, 2011 @ 12:12 GMT
"Suppose the disk is labeled thus, but its record is blank. To the observer (the one who plays the disk), this would differ from a disk full of information ... how? Tom"

Evolving Time's Arrow
119 posts  •  created by Anil Ananthaswamy   •  May. 9, 2011 @ 13:01 GMT
"Anil, The question: "Could the story of the cosmos have been told sideways rather than from past to future?" is meaningless. We are able to look at the history of the universe only diagonally, since..."

Breaking the Universe's Speed Limit
78 posts  •  created by Graeme Stemp-Morlock   •  Apr. 21, 2011 @ 10:14 GMT
"Will we get any testable predictions form these speculations?"

Readers' Choice: Out of the Darkness
20 posts  •  created by Bob Swarup   •  Apr. 4, 2011 @ 13:44 GMT
"General relativity may still account for the dark stuff in the universe. Please see: http://www.prespacetime.com/index.php/pst/article/view/125 General relativity accounts for the precession of..."

Real-Time Physics
170 posts  •  created by Kate Becker   •  Apr. 4, 2011 @ 11:09 GMT
"Hey Kate, How about some more meat on these bones? :-) Particularly, from Lee Smolin's PI associate Fotini Markopoulou, whose concept of geometrogensis is stunning. I'm only kidding ... thanks for..."

A Whole New Quantum Ball Game
6 posts  •  created by Sophie Hebden   •  Feb. 25, 2011 @ 11:25 GMT
"Sophie, A most interesting experiment. However, you whetted my appetite and then gave no results gathered to date. I suspect the forces holding the Styrofoam balls together are very much smaller than..."

Q&A: Daniel Bedingham
7 posts  •  created by Miriam Frankel   •  Jan. 28, 2011 @ 05:33 GMT
"Well done."

Chaos, Consciousness, and the Cosmos
95 posts  •  created by Miriam Frankel   •  Jan. 19, 2011 @ 15:57 GMT
"Is it physics or phantasy?"

Classic Article: When Universes Collide
3 posts  •  created by Kate Becker   •  Dec. 30, 2010 @ 16:00 GMT
"sure this fatal crash will happen tomorrow morning at 7.30 am so drink a coffe at 7.00 do you do not get bored with this un-intelligent discussions which are out of good sense ?"

The Patchwork Multiverse
16 posts  •  created by Anil Ananthaswamy   •  Dec. 2, 2010 @ 15:36 GMT
"That's very interesting indeed. Just that it's hardly a "prediction" since we've known the value of the CC for some while now."

Crawling at the Speed of Light
40 posts  •  created by Bob Swarup   •  Nov. 10, 2010 @ 16:29 GMT
"This could lead to some lab bench simulations of gravitation as well. A region of optical propagation which slows light down along some distance sould be a simulation of a black hole. Cheers LC"

The Art of Math
43 posts  •  created by Sophie Hebden   •  Oct. 20, 2010 @ 15:40 GMT
"Let me see if I got this right. Catagory theory could allow for the comparison of apples and oranges so to speak. For instance comparing a gram of irridium to a gram of lithium by listing each's..."

Readers' Choice: The Many Lives of Hugh Everett III
62 posts  •  created by Graeme Stemp-Morlock   •  Oct. 5, 2010 @ 15:05 GMT
"I tend to agree that the many worlds interpretation is contentless, as are so called nonlocal hidden variable theories. These may be useful in solving different types of problems, but there are not..."

The Times They Are A-Changin'
109 posts  •  created by Graeme Stemp-Morlock   •  Sep. 7, 2010 @ 12:56 GMT
"I have looked at this paper, though not read in depth as yet. The two times idea means taking the two time directions the AdS is embedded in and extending physics into F-theory. One has to be..."

Readers' Choice: The Holographic Universe
44 posts  •  created by Anil Ananthaswamy   •  Aug. 17, 2010 @ 09:41 GMT
"the article reports, "String theory has been formulated as a candidate theory of quantum gravity, which can be applied in realms where both quantum mechanics and general relativity are important. But,..."

The Quantum Playstation
72 posts  •  created by Graeme Stemp-Morlock   •  Jul. 18, 2010 @ 11:13 GMT
"I learned and figured out to do with Linux a year ago, but the cost was a bit much. So I put the plan on hold. Now I am reinspired. I just looked on Craig's list and the price for used ps3s are..."

The Destiny of the Universe
74 posts  •  created by Julie J. Rehmeyer   •  Jul. 2, 2010 @ 11:40 GMT
"I have read most of Paul Davies' books. He never disappoints, in his ability to stand on the leading edge, and push just a little further. I agree that the idea is profound. I don't think it is..."

Time and the Multiverse
254 posts  •  created by Miriam Frankel   •  Jun. 17, 2010 @ 11:28 GMT
"time runs only in the mind, universe (and eventually multiverse) is utterly timeless yours amrit"

The Black Hole Universe
39 posts  •  created by Kate Becker   •  May. 28, 2010 @ 11:11 GMT
"yes our universe is in a black hole only my finger is out of it"

The Universe's Odyssey?
7 posts  •  created by Anil Ananthaswamy   •  May. 10, 2010 @ 08:19 GMT
""Certainly, the workings of antiparticles no longer flummox him. Quite the opposite, in fact, as Sarangi believes that "anti-universes" and their interplay with regular universes could help tackle one..."

The Myth of Gravity
147 posts  •  created by Sophie Hebden   •  Apr. 25, 2010 @ 15:24 GMT
"State of the art crackpotism and delusions of desperation."

The Crystallizing Universe
52 posts  •  created by Kate Becker   •  Apr. 7, 2010 @ 12:46 GMT
"Dear Dr. George Ellis, physical time is not part of space, space is timeles. Time is run of clocks in space. With clocks we measure flow of change in timeless space. We can only talk about "flux of..."

Testing Times for Nature's Constants
8 posts  •  created by Sophie Hebden   •  Mar. 21, 2010 @ 14:44 GMT
"Hello dear Xinwei Huang , Happy to see you here. Best Regards Steve"

Ripping Apart Einstein
108 posts  •  created by Bob Swarup   •  Mar. 7, 2010 @ 10:32 GMT
"I have often wondered if the vacuum between the local Star our Sun and Earth, is of the same density as the vacuum between a Proton and its nearest Electron? When photons travel from the Sun to here,..."

Readers' Choice: Much Ado About Nothing
172 posts  •  created by Bob Swarup   •  Feb. 19, 2010 @ 11:05 GMT
"If one has an area/space devoid of particles, then this space is vaccum?..the fact there is no particles must mean that space_vacuum is Expanding. Think of extracting particles from a canister/vessel,..."

Classic Article: Building a Better Black Hole
20 posts  •  created by Scott Dodd   •  Jan. 29, 2010 @ 19:01 GMT
""Of course, Crane continues, to do so, we’ll need armies of self-replicating space robots and focusing lasers the size of an asteroid. "I haven’t spent a lot of time on the engineering," Crane..."

Editor's Choice: Taming Infinity
41 posts  •  created by Anil Ananthaswamy   •  Jan. 10, 2010 @ 11:54 GMT
"Light Reflections: "One way to see such effects would be to examine the propagation of light. Imagine bouncing a beam of light off the surface of Alpha Centauri, the nearest star." Would not it be..."

Readers' Choice: True Lies: Why Mathematics is an Illusion
142 posts  •  created by Scott Dodd   •  Nov. 30, 2009 @ 07:53 GMT
"Does universe has any dimension or it is dimension-less? In the universe we can observe only distances not dimensions. Thee dimensional Euclid space, four dimensional Riemann space and..."

Natural Selection in Action
0 posts  •  created by Anil Ananthaswamy   •  Nov. 10, 2009 @ 18:57 GMT

Copenhagen vs. Many Worlds: And the Winner Is...
0 posts  •  created by Anil Ananthaswamy   •  Nov. 10, 2009 @ 18:52 GMT

Editor's Choice: The Evolution of Reality
30 posts  •  created by Anil Ananthaswamy   •  Nov. 10, 2009 @ 18:40 GMT
"What is "objective reality"? We can have "objective experience" of reality when we experience exactly what we perceive in senses. In "subjective experience" between perception and experience there is..."

Time at the Event Horizon
168 posts  •  created by Anil Ananthaswamy   •  Oct. 29, 2009 @ 14:52 GMT
"One more excellent example of why time doesn't work as some meta-dimension along which series of events exist."

Tying Up the Multiverse with String
90 posts  •  created by William Orem   •  Oct. 11, 2009 @ 18:40 GMT
"Dear Dr. Abdrei Linde Reading your paper I see you consider space-time being fundamental arena of the universe. My research shows that quantum space is timeless and direct information medium. So the..."

Readers' Choice: Taking on the 10-D Universe with 8-D Math
65 posts  •  created by Anil Ananthaswamy   •  Sep. 13, 2009 @ 11:05 GMT
"very beautiful family ,congratulations Mr Dray ,sincerely ,I see a real christian probably .It's well like that . About string ,it's time to stop these lost of time ,the exeptional business of nothing..."

The Crazy Old Uncle of Algebra
0 posts  •  created by Anil Ananthaswamy   •  Sep. 13, 2009 @ 09:58 GMT

Editor's Choice: The Illusion of the Expanding Universe
298 posts  •  created by Kate Becker   •  Aug. 25, 2009 @ 09:43 GMT
"Yes Dr. Barbour is perfectly right: there is no time in the universe. The only time exists is inner time. The universe is in a continuous change. A change n gets transformed into a change n+1, the..."

Journeying Through the Quantum Froth
35 posts  •  created by Marc Kaufman   •  Aug. 8, 2009 @ 15:49 GMT
"What does this mean for string theory vs loop quantum gravity?"

The Black Hole and the Babel Fish
4 posts  •  created by Kate Becker   •  Jul. 21, 2009 @ 12:38 GMT
"The graphene system is fascinating for quantum field on the sheet are not restricted into being strictly fermionic or bosonic. Under an exchange of particles with state vectors |&936;_2> there is..."

Readers' Choice: End of the Quantum Road?
10 posts  •  created by Bob Swarup   •  Jul. 3, 2009 @ 13:09 GMT
"So information theory is the ultimate reality?"

Editor's Choice: The Rise of the Anti-Universe
2 posts  •  created by Anil Ananthaswamy   •  Jun. 20, 2009 @ 10:17 GMT
"We don't yet know if such things as string landscapes exist. Is there some way that this work will provide new testable predictions?"

Readers' Choice: The Curious Case of the Quantum Arrow of Time
19 posts  •  created by Sophie Hebden   •  Jun. 6, 2009 @ 12:15 GMT
"Origin of time is in the human mind, in neuronal activity of the brain that creates sensation of time flowing. Universe itself it timeless (atemporal) motion runs in timeless space. Awakened observer..."

The Holographic Universe
6 posts  •  created by Anil Ananthaswamy   •  May. 22, 2009 @ 07:30 GMT
"Does this relate to Plato and the world of forms? I'm thinking of Plato's Allegory of the Cave. From Wikipedia: "Plato imagines a group of people who have lived chained in a cave all of their lives,..."

Much Ado About Nothing
7 posts  •  created by Bob Swarup   •  May. 9, 2009 @ 09:44 GMT
"Newtonian (re Green's function) and metric gravitation are even-parity functions: f(x) = f(-x). They don't quantize. Quantum gravitation theories require supplementing Einstein-Hilbert action with an..."

Measuring Up the Multiverse
2 posts  •  created by Kate Becker   •  Apr. 24, 2009 @ 16:45 GMT
"It's been asked elsewhere, but I think it's worth repeating here: Why is it when occultists talk about these sorts of things they're branded as insane, but when someone with an advanced physics degree..."

Measuring Up the Multiverse
0 posts  •  created by Kate Becker   •  Apr. 24, 2009 @ 16:42 GMT

Measuring Up the Multiverse
0 posts  •  created by Kate Becker   •  Apr. 24, 2009 @ 16:38 GMT

The Many Lives of Hugh Everett III
17 posts  •  created by Graeme Stemp-Morlock   •  Apr. 11, 2009 @ 15:23 GMT
"The pdf file is mangled. You cannot read it with any pdf viewer other than Adobe acrobat. For example, it doesn't work with Preview, which is the default pdf viewer in Mac OS X."

Out of the Darkness
28 posts  •  created by Bob Swarup   •  Mar. 27, 2009 @ 17:19 GMT
"In my opinion dark energy is unnecessary speculation. It attempts to give an explanation for a phenomenon that is a subjective construct based on observation of electromagnetic radiation.The..."

Editor's Choice: Quantum Upsizing
11 posts  •  created by Graeme Stemp-Morlock   •  Mar. 13, 2009 @ 16:28 GMT
"I can see why this Article is an Editor’s choice because this experiment has Nobel potential. I would like a heads up if they start computer companies after this. What are the mirrors made from and..."

Taming Infinity
15 posts  •  created by Anil Ananthaswamy   •  Feb. 27, 2009 @ 14:16 GMT
"I hope i'm not getting annoying but I do think that this is relevant.... According to the prime quaternion model, all matter (from atoms to matter composed of atoms) is in continuous motion along the..."

Readers' Choice: The Emperor's New Swindle
12 posts  •  created by Julie J. Rehmeyer   •  Feb. 13, 2009 @ 17:21 GMT
""Bohmian mechanics does away with fluffy notions of wave-particle duality— instead particles really are particles that occupy a definite position in space, re-gardless of whether or not they have..."

The Curious Case of the Quantum Arrow of Time
10 posts  •  created by Sophie Hebden   •  Jan. 30, 2009 @ 15:50 GMT
"I'm happy with entropy because it is simple and I am unhappy with quantum because it is a Frankenstein and unnecessarily complicated. I'm interested in the ordering parameter they are using and if..."

Through a Glass, Darkly
104 posts  •  created by Anil Ananthaswamy   •  Jan. 16, 2009 @ 14:34 GMT
"Cool article. Is there an article out discussing these quark assignments in F4? It's good to see root diagrams being used this way."

Back to Mach
40 posts  •  created by Kate Becker   •  Jan. 2, 2009 @ 18:21 GMT
"First, I agree with Lee Smolin that Julian Barbour is already assured a place in physics history whether he is right or wrong. His questions always shine the brightest light into the deepest..."

The End of the Quantum Road?
11 posts  •  created by Bob Swarup   •  Dec. 19, 2008 @ 15:21 GMT
"Additional Material In quantum mechanics the observer may decide to measure different sets of complementary variables, for example, in the case of electron spin, the spin components along three..."

The Universe's Odyssey?
1 post  •  created by Anil Ananthaswamy   •  Dec. 5, 2008 @ 16:30 GMT
"It does not seem a logical approach to speculate on infinite numbers of universes with different laws just to fit with an unproven theory that was developed to explain some observable phenomena in our..."

El Naschie Discussion
483 posts  •  created by Kavita Rajanna   •  Dec. 4, 2008 @ 21:30 GMT
"Dear Lisi, please do not make the same mistake of the members of the string community by ignoring competing ideas. Elnaschie has been working in the same direction as for yourself for almost two..."

Hunting for Theories of (Not) Everything
8 posts  •  created by Marc Kaufman   •  Nov. 21, 2008 @ 16:24 GMT
"In my essay, Time Traveling by Simuverses in the point "1-The nature of Time in the architecture of the universe", I expose a theory about the no need for a ToE. Have you read it?"

Quantum Darwinism
5 posts  •  created by Anil Ananthaswamy   •  Nov. 7, 2008 @ 13:40 GMT
"Rather than the fundamental dimension going from past to future which Relativity treats time, if it is instead an emergent property of motion, then each state is replaced by the next, so time, as the..."

Sequence Space: The Final Frontier
3 posts  •  created by Graeme Stemp-Morlock   •  Oct. 24, 2008 @ 10:50 GMT
"The process of development will, in my opinion, be found to occur as a result of dynamics within quaternion space.The construction of organisms involving fractal like growth from chaos, that produces..."

The Black Hole and the Babel Fish
1 post  •  created by Kate Becker   •  Oct. 10, 2008 @ 11:58 GMT
"The properties of novel materials can also be explained by considering their behaviour in the 3+1 spatio- energetic dimensions and how cooling affects this as well as considering the difference in..."

A Stitch in Quantum Time
4 posts  •  created by Anil Ananthaswamy   •  Sep. 26, 2008 @ 10:35 GMT
"I have been very interested in the authors work for some time (no pun intended), while reading some of their paprrs in 99 I happen to watch the Royal Intitutions Lecture about time, and there was an..."

Logic Through a Lens
2 posts  •  created by Scott Dodd   •  Sep. 12, 2008 @ 12:10 GMT
"Physics postulates isotropic vacuum for Einstein's elevator (GR) and angular momentum conservation (QFT) through Noether's theorem. Parity is the only non-Noetherian external symmetry. Physics..."

Logic Through a Lens
0 posts  •  created by Scott Dodd   •  Sep. 12, 2008 @ 12:05 GMT

The Emperor's New Swindle
5 posts  •  created by Julie J. Rehmeyer   •  Aug. 29, 2008 @ 11:01 GMT
"It's encouraging to see that physicists still work on common sense interpretations of QM like the Bohmian version. Tackling the issue of entanglement is not easy. Shouldn't it be worthwhile first to..."

Quantum Upsizing
1 post  •  created by Graeme Stemp-Morlock   •  Aug. 15, 2008 @ 12:46 GMT
""Superposition is another feature that is peculiar to quantum systems. Before a quantum object is measured, it does not have definite characteristics. Instead, it exists in a superposition of multiple..."

When Worlds Collide
1 post  •  created by Kate Becker   •  Aug. 1, 2008 @ 08:36 GMT
"Hello , Impossible ! Regards Steve"

A Perfect Match
1 post  •  created by William Orem   •  Jul. 18, 2008 @ 07:45 GMT
"Hello , Nice to know you , I think that a string is divisible ,a sphere ,no ! It's logic and universal ,the spherization is foundamental and harmonious. I work on my Spherization Theory ,all is linked..."

test article
0 posts  •  created by Christopher E. Gronbeck   •  Jul. 9, 2008 @ 15:34 GMT

Two for the Road
5 posts  •  created by Marc Kaufman   •  Jul. 4, 2008 @ 14:50 GMT
"http://eskesthai.blogspot.com/2008/07/intellectual-defeatism.html?showComment=1215704040000#c6917934854461833434 While this is of course some interest to me, I thought any description that would give..."

Predicting The End
8 posts  •  created by Govert Schilling   •  Jun. 13, 2008 @ 15:24 GMT
"Repulsive energy in the far off future, will accelerate and create a vacuum void, out of this void particles will emerge, ripped into existence. Out of this darkness will emerge attractive energy,..."

A Blackboard at Brunch
1 post  •  created by Kate Becker   •  May. 30, 2008 @ 09:31 GMT
"Wow are u guys seriously close ... If u want help. post with an affirmative I can help complete this puzzle !!"

Baby Steps
3 posts  •  created by Mike Perricone   •  Apr. 11, 2008 @ 15:53 GMT
"At the Universe's end phase, there will be less and less interacting particles, there will be a resulting low-entropic signature. The early Universe's low entropy will almost certainly be of similar..."

High Fidelity
10 posts  •  created by The FQXi Editors   •  Apr. 3, 2008 @ 17:35 GMT
"Alternative approaches to quantization of time are seldom discussed in modern scientific literature. I would like to offer a subject for discussion at your Web site, which might be interesting. Let us..."

Cosmic Doomsdays: How Will It All End?
0 posts  •  created by Kate Becker   •  Mar. 28, 2008 @ 10:44 GMT

Squishy Bedrock
4 posts  •  created by Julie J. Rehmeyer   •  Mar. 20, 2008 @ 16:01 GMT
"So if there are many Universe's, convieniently suppresing the awkward questions from certain Universe, like the one I reside within, then I suppose there will be young Universe's where Einstein never..."

The Next Ultimate Theory
11 posts  •  created by Marc Kaufman   •  Mar. 14, 2008 @ 08:16 GMT
"That was a very interesting article about the fundamentals of physics. However, I've argued about this for many years, and I'd like to add to the conversation. Inevitably the debate about the..."

Despairing Still?
2 posts  •  created by Mike Perricone   •  Mar. 7, 2008 @ 07:59 GMT
"The Q-RAY Process ? There is a recent paper Seth Lloyd in which there are interesting handwaving, or quantum_ranging process, or Q-RAYS ? Take the Quantum Light that Seth propose's, now using an..."

DoubleThink
3 posts  •  created by Kate Becker   •  Feb. 29, 2008 @ 07:40 GMT
"This is an interesting topic but the basic idea is due to the quantum superposition. Recently it was realized that macroscopic systems (computers are also macroscopic devices) will obey a nonlinear..."

Phantasms of Infinity
3 posts  •  created by Julie J. Rehmeyer   •  Feb. 22, 2008 @ 10:52 GMT
"“Without a way of calculating probabilities, cosmology is a dead science, it doesn’t exist,” says Vitaly Vanchurin of Tufts University. “At first, I thought, this is crazy, this is not science. But..."

Down the Rabbit Hole
13 posts  •  created by Scott Aaronson   •  Feb. 15, 2008 @ 09:45 GMT
"Simulation, by it's very existence, needs an event in which to "replay/simulate" ? A dream within a dream, would be replaying something unreal, in any format whatsoever? A simulation, must have a..."

Shining A Light on a Dream
5 posts  •  created by Marc Kaufman   •  Feb. 8, 2008 @ 10:34 GMT
"Wojciech Zurek is correct about the problem of relying on our human perceptions to understand physical reality. The information obtained by our physical senses and interpretation of that information..."

Wigner’s Gift Horse
5 posts  •  created by Julie J. Rehmeyer   •  Feb. 2, 2008 @ 14:27 GMT
"You might be interested in Sir Roger Penroses's [url:http://online.itp.ucsb.edu/online/plecture/penrose/oh/01.html]Extended Physical WorldView.[/url]."

Philosophy of the Multiverse
7 posts  •  created by Govert Schilling   •  Jan. 25, 2008 @ 07:46 GMT
"The problem with a multiverse of universes having different settings (particular laws and constants) is that there must also be a mechanism of maintaining those particular settings. In one world..."

Searching For The Golden Spike
7 posts  •  created by Kate Becker   •  Jan. 18, 2008 @ 09:05 GMT
"Nice article Kate. To Lee Smolin and Steve Giddings, A quantum gravity could recognize gravitation as a probability group consisting of all possible past-like states, i.e., all states of greater..."

As Constant As Polaris
2 posts  •  created by Govert Schilling   •  Jan. 11, 2008 @ 09:52 GMT
"From a mathematical viewpoint constants may represent factors that can not be determined. The number is inserted into the equation to get an answer. Constants may represent factors that cannot be..."

temp
0 posts  •  created by Christopher E. Gronbeck   •  Jan. 7, 2008 @ 11:50 GMT

test title
0 posts  •  created by Christopher E. Gronbeck   •  Jan. 7, 2008 @ 11:00 GMT

The Cosmic Puzzle
0 posts  •  created by Kate Becker   •  Jan. 4, 2008 @ 14:09 GMT

The Cosmic Puzzle
12 posts  •  created by Kate Becker   •  Jan. 4, 2008 @ 14:07 GMT
"Carroll has it right in considering maybe we are just not at the true vacuum yet, particularly the suggestion that we are heading for a true vacuum, and the notion that the quantum vacuum energy is..."

Surfing the Folds of Spacetime
1 post  •  created by Scott Dodd   •  Dec. 28, 2007 @ 07:46 GMT
"right the shape sphere The core Idea we postulate it is that the nature has same fundamentals. In this scientific article we will explore the broad area in physical science in different aspect and..."

Topos Or Not Topos
1 post  •  created by Govert Schilling   •  Dec. 21, 2007 @ 08:56 GMT
"I give my understanding of the place of Topos theory in mathematics : Traditional mathematics are based on both the langage of set theory and classical logic . This means that any mathematical object..."

Readers' Choice: What Makes Time Tick?
1 post  •  created by Scott Dodd   •  Dec. 14, 2007 @ 10:12 GMT
""Why do events unfold in one temporal order and essentially never in reverse?" Dear Brian Greene, There are two assumptions we make that must be discarded in order for the arrow of time to be fully..."

Through the Looking Glass
4 posts  •  created by Kate Becker   •  Dec. 7, 2007 @ 13:33 GMT
"Can you prove that a single coin has more than 2 face values, either heads or tails?..a single coin if split down the middle, can be sent to two different shops, one having a complete heads face, and..."

Emergent Theorist
0 posts  •  created by Mike Perricone   •  Dec. 3, 2007 @ 13:09 GMT

Punting in Plato’s Cave
1 post  •  created by Mike Perricone   •  Nov. 19, 2007 @ 13:53 GMT
""We can find out whether its physical state lies in one subset of possibilities, or another subset, according to one partitioning of the full set of states into subsets." One could also add the..."

It’s All Relative
3 posts  •  created by Kate Becker   •  Nov. 9, 2007 @ 07:39 GMT
"This article mentioned Dreyer's work and some possible consequences of it. I think this article does not do justice by omitting to mention that the theory so called "internal relativity" is not an..."

In the Key of Symmetry
1 post  •  created by Mike Perricone   •  Nov. 2, 2007 @ 09:14 GMT
"If the structure of the universe were a song it would be on repeat and played in the key of symmetry. If it were an album it would have an infinite number of songs. Here is a list of the first songs..."

Surfing the Folds of Spacetime
1 post  •  created by Scott Dodd   •  Oct. 26, 2007 @ 09:26 GMT
"The idea of a "science hostel" is interesting - a sort of secular equivalent, but heterosexual, of a monastery."

A Deeper Understanding
1 post  •  created by Marc Kaufman   •  Oct. 19, 2007 @ 12:40 GMT
"So what if the Electron contains a "space-like", singularity, and the Photon has a corrosponding "time-like" singularity?.."spacetime" as one, in the context of Einsteins theory of GR, would have..."

Building a Better Black Hole
1 post  •  created by Scott Aaronson   •  Oct. 12, 2007 @ 12:18 GMT
"For those interested in the subject of black holes, I have started a three part series called, Black Holes Through Outer Space, on the subject. The first paper, Predictable Barriers Precluding Any..."

Talking Heads
5 posts  •  created by Kate Becker   •  Oct. 5, 2007 @ 13:27 GMT
"From the article: "Imagine you flip a coin 100 times. You can’t predict whether the coin will land heads or tails on any particular toss—only that, if you keep flipping for a long time, the coin..."

Topos or Not Topos
2 posts  •  created by Govert Schilling   •  Sep. 28, 2007 @ 08:57 GMT
"Have physicists considered the possibility that quantum physics differ from macro level physics because macro level physics has organization. Quantum level particles behave as independent..."

Magic Numbers
2 posts  •  created by Kate Becker   •  Sep. 21, 2007 @ 17:44 GMT
"The fine structure constant earned a mention in this story in the July/August issue of the Skeptical Inquirer. Ralph Estling writes: "Some physicists have begun challenging long-held shibboleths about..."

Straightening Out Mind-Bending Measurements
0 posts  •  created by Mike Perricone   •  Sep. 15, 2007 @ 21:49 GMT

Teaching an Old Wave New Tricks
0 posts  •  created by Mike Martin   •  Sep. 7, 2007 @ 09:59 GMT

Serious Science. Serious Fun.
0 posts  •  created by Scott Dodd   •  Aug. 31, 2007 @ 08:59 GMT

Possible Pasts in a Universe of Universes
2 posts  •  created by Jeff Kanipe   •  Aug. 24, 2007 @ 08:31 GMT
"Hi Richard, I like the analogy of a loaf although I use the idea of a whole pie instead, but I would argue there is an obvious way of slicing the loaf or the pie. Since we invariably are slicing the..."

The Cat With Two Tails
2 posts  •  created by William Orem   •  Aug. 16, 2007 @ 15:35 GMT
"If the tail swings slowly, and the picture is taken rapidly(fast shutter rate), then the cat's tail will appear to be at two different locations in one instant? Of course there is a midway point..."

Eva Silverstein: The quest to simplify
5 posts  •  created by Mike Perricone   •  Aug. 10, 2007 @ 08:31 GMT
""String theory predicts there are more than the familiar four dimensions of space-time. But where do those extra dimensions come from? " Here and now?..Past..Present.. Future? If string theory..."

Making Waves with Gravity
6 posts  •  created by Jeff Kanipe   •  Aug. 2, 2007 @ 17:07 GMT
"Understanding gravity may require temporarily forgetting what physicists think they know about gravity. I've mentioned in other threads the potential problem the human brain can cause in..."

Kwiat’s Kwest: Settling – Once and For All – Einstein’s Final Frontier
1 post  •  created by Mike Martin   •  Jul. 27, 2007 @ 14:09 GMT
"I'm not sure it is loophole free. There is a potential major problem using photons. If I think a photon will go through gate "A" it will go through gate "A". If I think it will go through gate "B"..."

A Dark and Lonely Future
2 posts  •  created by Fred Adams   •  Jul. 20, 2007 @ 07:16 GMT
"Scott, a most excellent article, best I have read here yet. You should have gone more into the title theme but perhaps your limited to two pages. Thanks. Fred, Great work, I enjoyed Five Ages..."

Physicists Reaching Out
0 posts  •  created by Trudy E. Bell   •  Jul. 13, 2007 @ 09:52 GMT

Islands in the Sea
5 posts  •  created by William Orem   •  Jul. 6, 2007 @ 10:25 GMT
"Nice Article. Vilenkin seems to have one of the better imaginative minds in physics. If large-scale topology is flat as WMAP indicated, then it has always been flat, which means the singularity of the..."

Deconstructing Everett?¢‚Ǩ‚Ñ¢s Crazy Idea
5 posts  •  created by Steve Nadis   •  Jun. 29, 2007 @ 10:14 GMT
"The subject being of great interest, if only to confuse one as to intepretation direction?..but I must admit to being curious as to how a (known) quantum process, is certain to have more than one..."

Not So Local
3 posts  •  created by Fred Adams   •  Jun. 22, 2007 @ 09:18 GMT
"Local observations should not mean a measure takes place by default? If I observe a speck of dust, at the very horizon of my local field of vision, then I can recieve this information without actually..."

To Solve a Cosmic Mystery, FQXi Awardees Think Outside the Box
0 posts  •  created by Mike Martin   •  Jun. 15, 2007 @ 09:16 GMT

In Search of Uncertainty
4 posts  •  created by Scott Dodd   •  Jun. 8, 2007 @ 08:41 GMT
"In the beginning, theee came a simple thought, a lonely query about a local oddity (local to the person that instigated the first thought!), thus one simple question needed one acceptable answer...."

Chasing Constant Change
3 posts  •  created by Govert Schilling   •  Jun. 1, 2007 @ 10:08 GMT
"Physicists can be so naive. The constants in physics equations are not necessarily "constant" They may represent unknown factors which do not appear to change, at least not in the short run. ..."

Chasing Constant Change
0 posts  •  created by Govert Schilling   •  Jun. 1, 2007 @ 10:05 GMT

Chasing Constant Change
0 posts  •  created by Govert Schilling   •  Jun. 1, 2007 @ 10:04 GMT

Eavesdropping On ET
1 post  •  created by Steve Nadis   •  May. 25, 2007 @ 08:59 GMT
"The radio signals most likely to be detectable would be those emitted by scientific probes or even communications between space ships (for space traveling civilizations). Such signals would of..."

Mini-Grants, Major Benefits
0 posts  •  created by Jeff Kanipe   •  May. 18, 2007 @ 14:01 GMT

Through the Looking Glass
1 post  •  created by Kate Becker   •  May. 11, 2007 @ 08:56 GMT
"In my essay 527 I already pointed to the possibility that some oddities of QM can be ascribed to mistakes in the philosophy behind application of mathematics to physics. I apologize for possibly..."

In Search Of Other Earths
1 post  •  created by Jeff Kanipe   •  Apr. 17, 2007 @ 14:50 GMT
"Hello, A very interesting article ,it's fascinating . Personnally ,It's evident what life is universal . If I could ,I will travel in our Universe to explore ,what a beautiful dream ,If I could..."

A Wonderful Outcome
14 posts  •  created by Scott Dodd   •  Apr. 17, 2007 @ 12:37 GMT
"It is simply a huge mistake to imagine the cosmos as rushing from order to chaos. We know today in science that the expansion of the universe is accelerating directly toward absolute zero. The only..."

Charting the River of Time
4 posts  •  created by William Orem   •  Apr. 17, 2007 @ 12:34 GMT
"There are a number of interesting issues that eminate from this article. It seems that a closed-time-like curve, where an object travels a distance, and returns to where it started(or at least to the..."

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