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Beyond the Standard Model

- Professionally researched theories... strings, branes, & LQG
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Jan16-12 Greg Bernhardt
announcements, btsm, event Sticky Thread Pinned: BtSM Event Announcements ( 1 2 3 ... Last)
This sticky is for announcements of pertinent scientific events, such as conferences, seminars, or public talks. This...
Aug20-14 11:17 AM
marcus
68 67,042
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Jul14-12 08:32 AM
ZapperZ
1 26,693
Hi there, I have no mathamatics background or never attended ant classes of Cosmology. So please if you can answer...
May24-12 04:20 PM
fzero
1 1,890
Recently, I am very interested in Loop Quantum Gravity. But I hope I can know more about the recent development of...
May23-12 05:52 PM
marcus
105 30,218
I've read that string theory suggests that black holes may be stringy fuzzballs without a singularity at the center....
May23-12 12:01 AM
atyy
1 1,604
http://www.gravityresearchfoundation.org/pdf/abstracts/2012abstracts.pdf Ted Jacobson got honorable mention with this...
May21-12 03:50 PM
DrChinese
4 3,007
Litim and Satz have just addressed a question I've long wondered about. http://arxiv.org/abs/1205.4218 Limit...
May21-12 08:21 AM
marcus
2 1,896
Hi, I was working through a Twistor paper and it was explaining the link between holomorphic vector bundles and anti...
May19-12 09:26 AM
sheaf
3 1,472
How can isotropy emerge in a 'salt' cellular automaton, since the automaton is constrained by the three axes? Or...
May18-12 06:08 PM
intervoxel
0 1,548
In the current long thread discussing string theory, arivero wrote: I replied So here is the promised thread....
May18-12 03:04 AM
mitchell porter
28 7,153
Hi guys basically I'm in secondary school and my teacher started taling to me about the four forces in space which are...
May16-12 03:50 PM
bapowell
2 1,644
Dear PF, Could you please advise me good detailed reference on Grand Unified Theories... especially I want to see...
May15-12 02:06 AM
GeraldHoward
2 2,092
http://pirsa.org/12050061 Conformal Gravity and Black Hole Complementarity Speaker(s): Gerard t'Hooft Date:...
May14-12 01:07 PM
marcus
1 2,049
Hello, My name is Holly... I'm new here.... so i have no idea weather I put this in the right section! D: ......
May14-12 12:23 PM
SakuraAi
15 3,999
We currently have a thread about logarithmic corrections to the basic black hole entropy formula. I was thinking about...
May10-12 11:42 AM
marcus
9 3,017
Ashoke Sen has written a paper http://arxiv.org/abs/1205.0971 which uses path integrals in Euclidean gravity to...
May9-12 07:47 PM
MTd2
23 4,151
Just got this issue (also linked to from PF home page): ...
May8-12 06:09 AM
muinon
15 4,473
And is a black hole where strings stop vibrating? Like one membrane deadening the vibrations resonating from another...
May7-12 08:22 PM
Caracoid
0 3,094
I was recently reading a small news article named Experiments Show Gravity Is Not an Emergent Phenomenon. Linky. ...
May4-12 06:09 PM
Sigurdsson
3 1,758
Has anyone read Sach's textbooks and papers? What is incosistent in his approach, as far as I can tell there's...
Apr30-12 09:17 PM
trango
27 9,116
Can anyone give me a general sense of what the quantum master equation (or BV master equation) is and how it relates...
Apr29-12 07:04 PM
fzero
4 2,779
I know that cosmic string have intense energy and are apparently leftovers from the big bang and can create a sort of...
Apr27-12 05:12 PM
mwalmasri
1 1,968
Tom's thread "Why I'm REALLY disappointed..." continues to get increasingly thought-provoking and informative. I...
Apr27-12 01:10 PM
marcus
357 56,317
Hello, I am an amateur physics enthusiast and would like to pose a question to you. It is my understanding that...
Apr26-12 04:35 PM
mfb
1 2,326
What are the charges of the X and Y boson? I've been looking through online material, and most doesn't mention...
Apr25-12 07:47 AM
lpetrich
10 2,605
I would like to discuss a puzzle I'm wondering about in loopy approaches to quantum gravity. The puzzle is roughly...
Apr25-12 02:38 AM
Demystifier
60 12,651
I have read in a couple different places that the math that comes out of string theory has helped a couple of...
Apr24-12 07:41 PM
redrum419_7
6 2,310
There is a natural way to formulate Loop quantum geometry as the dynamics of line defects in a flat vacuum. Just under...
Apr23-12 09:10 AM
marcus
3 1,980
The appearance here of threads such as Causes of loss of interest in the String program and Is string theory really...
Apr23-12 03:48 AM
Paulibus
2 2,126
http://pirsa.org/12040059 Fine presentation today, room packed, good questions from audience (esp. from Turok but...
Apr21-12 06:10 PM
marcus
49 8,891
Please teach me this: We know that there is a approximate symmetry of time T in physics(together with CP...
Apr19-12 09:15 AM
ndung200790
3 1,667
Einstein's General Realitivity acurately computed the precession of the perihelion of the Mercury, Schwinger's and...
Apr19-12 07:03 AM
Berlin
6 2,171
Hello all, I am currently a Junior in High School with a deep interest in Physics/Mathematics, specifically in the...
Apr18-12 10:28 AM
bapowell
4 2,429
My understanding is that Fermi has results that show the mixing angle for neutrinos is not the same as the mixing...
Apr18-12 02:51 AM
DrBenStill
1 2,048
The scientific method says that if experiments or observations falsify a theory, that theory must be rejected. String...
Apr16-12 04:21 PM
RoshanBBQ
34 9,766
Hi, In Birrel and Davies ch4 they write: \langle \psi|:T_{ab}:|\psi \rangle =\langle \psi|T_{ab}|\psi \rangle...
Apr14-12 11:45 AM
LAHLH
2 2,117
what is the the easiest way to learn standard model theory ?
Apr14-12 08:57 AM
bapowell
8 2,798
In LQG the canonical variables are a SU(2) connection A, and the "electric" field E, such that they form a canonical...
Apr12-12 05:44 PM
zwicky
4 2,017
Hi Everyone, :shy: I read in some paper about the significance of Graviton-Graviton Scattering as a theoretical tool...
Apr10-12 01:31 AM
dpa
2 1,739
which particles or phenomena in High energy physics make us needs Noncommutative Solitons in String Theory?
Apr9-12 01:49 PM
mwalmasri
0 1,252
==sample quote== It is especially wrong to talk about a mysterious “substance” to denote dark energy. The expression...
Apr9-12 12:32 PM
marcus
123 28,235
Suppose we can meld quarks into leptons and leptons into quarks vice versa. Consider the particles to all be the same,...
Apr8-12 08:30 PM
KyleStreet
0 1,499

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