
This sticky is for announcements of pertinent scientific events, such as conferences, seminars, or public talks. This...

Aug2014 11:17 AM
marcus

68 
67,079 
Before posting anything, please review the Physics Forums Global Guidelines.
If you are seeking help with a...

Jul1412 08:32 AM
ZapperZ

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I came across an interesting discussion about LQG's philosophy (through Googling "Cauchy surface" and "loop quantum...

Dec108 03:34 AM
atyy

9 
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Hello,
i am given an action (only scalars) and i want to make it supersymmetric. Any hints?
Do i simply add...

Oct1711 01:58 AM
yola

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2,107 
The 4D triangulations are made up of a sequence of 3D triangulations or slices which are "glued" together with {4,1},...

Oct2509 06:37 PM
RUTA

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2,105 
Why are theories of Quantum Mechanics and Relativity not possible to combine? I read this on wikipedia and heard this...

Sep2310 12:45 PM
inflector

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Canonical theories of gravities imply a foliation of spacetime into 3 hypersurfaces, each one labeled by time and...

Dec2712 10:25 AM
marcus

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So the Hamiltonian of the wavefunction of the universe is equivalent to zero. Am I correct in interpreting this as a...

Aug2909 09:49 AM
Finbar

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I read a comment posted here last night (I'll search around for it) that said something to the effect of a large part...

Dec605 05:38 PM
hossi

9 
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This is very interesting, is it the first proposed method (that is within reasonable energy for particle accelerators)...

Oct1612 01:00 PM
NanoPassion

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http://arxiv.org/abs/0901.2984
Asymptotic safety in higherderivative gravity
Dario Benedetti, Pedro F. Machado,...

Jan2009 11:51 PM
marcus

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http://science.uniserve.edu.au/school/curric/stage6/phys/space/relativ.html
There are many, many sites on the web...

Nov2103 12:16 PM
marcus

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hello to brainiacs everywhere,
i posted a few questions last year but only received replies which
pointed out my...

Nov406 03:17 PM
OSbandito

0 
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Haelfix pointed out the paper "Quantum Topologically Massive Gravity in de Sitter Space", which calculates a partition...

Jun311 07:33 PM
mitchell porter

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Any experts in using SOFTSUSY (the tool) here?

Dec511 01:55 AM
chrispb

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Is somebody here involved with the causal set approach to QG?
http://arxiv.org/abs/grqc/0309009 is a nice...

Sep2709 09:56 AM
Carey

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As far as I know there is no firm prediction of any Lorentz bending derived from mainstream Loop.
The authorities on...

Aug2409 11:11 PM
marcus

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several recent papers have cited
Ashtekar and Lewandowski
"Background Independent quantum gravity: a status report"...

Mar304 12:17 AM
marcus

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2,094 
Hello  a few questions from a layman. A string's energy rises with the frequency with which it vibrates, right? So...

Sep1506 02:28 AM
litewave

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2,094 
http://wwwconf.slac.stanford.edu/ssi/2005/lec_notes/Lykken1/default.htm
Every year Stanford SLAC has a summer...

Aug905 12:11 PM
ohwilleke

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2,093 
What do thoughts do you have on Mtheory? It's credibility?
Also, is there evidence that these supposed membranes...

Feb1910 03:01 AM
Demystifier

13 
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Hi,
I've developed a game, or some may say tool, that aids in the conceptualization and visualization of movement...

Aug2011 07:35 PM
indydev

0 
2,093 
Dear PF,
Could you please advise me good detailed reference on Grand Unified Theories... especially I want to see...

May1512 02:06 AM
GeraldHoward

2 
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An interesting property of the Unruh effect is that the very existence of particles depends on a frame. Unruh...

Apr2709 03:24 AM
Demystifier

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2,091 
ok so in the cyclic model of the universe...two branes are colliding and this is causing big bangs every few trillion...

Dec2110 05:03 AM
torquil

1 
2,090 
Well, not new insights, but at least new paper and a new face:
http://arxiv.org/abs/1204.0328 Particle Physics from...

Apr712 08:45 AM
arivero

4 
2,090 
I read somewhere that a system consisting of a single black hole contains the maximum possible amount of entropy...

Sep2706 01:42 PM
TriTertButoxy

1 
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Just a stupid question (?), I have read about planck time, length, etc... as possible smallest measurable elements of...

Feb2507 12:37 PM
marcus

4 
2,089 
I am working on the detector signatures of charged (doubly) massive stable particle from a techicolor model; the...

Feb2208 08:52 AM
Oxymuon

0 
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Okay so if we assume strings (as described in superstring theory or M theory) are about the size of plank length, then...

Mar1611 01:53 AM
MathematicalPhysicist

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Minkowski space and deSitter space have been shown to be stable in GR under small perturbations. Perturbations do not...

Jun2113 10:38 AM
marcus

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2,089 
Hi guys I m new to his forums o I hope I post this in the right place.
I have a questions about the 11 dimension....

Aug1312 02:14 PM
Zix

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2,088 
Is Ads/CFT correspondance the same as gauge /gravity duality?

Sep2011 05:17 AM
Polyrhythmic

4 
2,087 
My question is simple and straight forward  how does a 1dimensional string "convert" to a zerodimensional point...

Jan1209 04:36 PM
derek.basler

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2,086 
This thread is in case discussion of the following paper is wished.
http://arxiv.org/abs/1102.0954
The Holst Action...

May1211 07:15 AM
nicoo

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2,086 
I came across a curious site on this topic:...

Mar1711 09:15 AM
Physics Monkey

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hi, how can we be sure that quantum gravity effects appear only at the Planck scale?
when i look at the quantum...

Oct2010 03:35 AM
suprised

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I get the impression from the following material that LQG models have 'resolved'
the divergent big bang singularity...

Jan613 10:05 PM
julian

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2,085 
Sorry this is all a bit condensed, but people seem interested in
this mass gap question so here are some more...

Nov2404 02:44 PM
Kea

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Please post suggestions for what could turn out to be "Most Influential Paper" that you see between now and June.
...

Jun2606 10:10 AM
marcus

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I wasn't certain if this topic strictly belonged in the GR forum.
I have read the article 'Singular disk of matter...

Feb808 10:18 PM
shalayka

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I am very bored and looking for entertainment such as a book or lecture having to do with string theory. Any...

Feb2410 01:37 AM
Grytviken

9 
2,079 