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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...
Sep15-14 12:03 AM
marcus
72 67,875
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Jul14-12 08:32 AM
ZapperZ
1 26,915
Suppose we detect a new force whose gauge group would require a SU(N) rep. What would be the smallest one that could...
Aug9-10 02:10 PM
LukeD
24 2,482
As I understand, it is postulated that only coherent states in LQG correspond to classical spacetimes. Is the ground...
Aug9-10 10:39 AM
marcus
4 1,912
I found this interesting article, (feb 12, 2001): http://www.sciencedaily.com/releases/2001/02/010212075309.htm ...
Aug7-10 08:20 PM
crx
0 2,281
I am posting my question in this forum because it is about a basic conceptual aspect of LQG discussed in Rovelli's...
Aug7-10 03:08 PM
haushofer
110 12,439
Unruh (by definition) effect shows that an accelerating observer will observe black-body radiation....
Aug7-10 02:21 AM
czes
2 2,069
I thought I'd share this intriguing article I found on Phys Org: http://www.physorg.com/news200224981.html The title...
Aug5-10 10:53 PM
Kevin_Axion
0 1,086
MTd2 spotted this one. It was time for a paper like this. Very glad to see it. http://arxiv.org/abs/1008.0354
Aug5-10 10:17 PM
marcus
8 2,350
given the conmutator of Astehkar variable = i\hbar \delta_{a}^{b}\delta_{a}^{b} then using the WKB procedure,...
Aug5-10 03:11 AM
zetafunction
0 890
Vincent Rivasseau and four others just posted "July3150" (I mean 1007.3150, just easier to remember that way for some...
Aug4-10 05:38 PM
marcus
20 3,239
what do you think of this explanation about calabi-yau and other 4 dimensions 1)...
Aug4-10 05:05 PM
sbrothy
5 1,185
Hey, I would like to ask you: I need have Standard Model with right-handed neutrinos. This is the simplest extension...
Aug3-10 02:45 PM
GeV
0 1,132
Atyy recently pointed us to a provocative quote from MTW: Mathematics was not sufficiently refined in 1917 to cleave...
Aug2-10 07:43 PM
marcus
6 1,694
I must put both of them because I want to have an idea of dynamics here, of scattering and of geometry at the same...
Aug1-10 11:31 AM
marcus
1 1,182
On page 109 he does the example of the "timeless double pendulum". He says that the phase space is two dimensional. I...
Aug1-10 05:12 AM
sheaf
1 914
What are the dimensions of the branes that to which it attaches? Can a string attach to other string as it were a...
Aug1-10 05:02 AM
mitchell porter
3 1,578
The almost simultaneous detection of low energy and high energy photons puts tight constraints on models predicting...
Aug1-10 01:32 AM
marcus
25 3,669
There were "rumors" that Ed Witten has de-emphasized string theory in his personal research quite possibly discouraged...
Jul31-10 11:20 AM
tom.stoer
24 5,190
page 4 "therefore one does not try to quantize gravity but instead attempts to provide a quantum description of...
Jul29-10 09:03 PM
ensabah6
0 1,173
Hi all. Last night while trying to explain how the world looks at the Quantum level I found myself stumbling upon a...
Jul29-10 01:00 PM
Kevin_Axion
1 1,017
if we use Semiclassical Quantum Gravity , will we get or can we get EXACT results ? or only asymptotic approximation ...
Jul29-10 11:39 AM
zetafunction
0 878
Does his Geometric Langlands research have anything to do with real physics? Or has he basically turned into a pure...
Jul29-10 11:37 AM
ccdantas
40 7,945
. How a field request capacity of a channel?
Jul29-10 05:33 AM
Fra
17 2,329
Recently I wrote a paper "Holograph in noncommutative geometry": http://arxiv.org/abs/1007.2976 Abstract:: In this...
Jul28-10 02:38 AM
shuijing
0 785
Spin networks describing BH have a central node with label taken from an intertwiner Hilbertspace of high dimension...
Jul27-10 07:00 PM
atyy
4 2,195
In analog models of gravity, such as acoustic metric theory, the motion of "matter" is influenced by the metric....
Jul27-10 05:43 PM
Argonaught
2 1,185
Thus far Tevatron and possibly LHC has found no evidence of SUSY, and DM searches thus far null and void. Steinhardt...
Jul26-10 07:45 AM
ensabah6
8 8,044
Would it make sense to think of excitations of a node as it they were made of particles of spin occupying states just...
Jul26-10 06:45 AM
Fra
17 3,275
What can we learn, if anything, from how the organizers of the ICHEP chose to represent the growing research activity...
Jul25-10 10:39 PM
marcus
8 1,961
I do not think that the following was presented as a live video. ...
Jul25-10 05:35 PM
jal
1 1,087
regarding the problem of time in QG, Is time absolute or dynamical in LQG? string theory? How does LQG and...
Jul25-10 05:16 PM
ensabah6
7 1,729
I have only taken a few college physics courses, and I have watched some videos about string theory. I would like to...
Jul25-10 01:41 AM
rai linga
13 6,393
LQG research is having what looks like a "heyday". A rush of papers that fit the various pieces of the puzzle...
Jul24-10 06:43 PM
marcus
2 1,461
Hey there PF, as you can see I am newly registered here, but I have been floating around for a little while now...
Jul24-10 05:45 PM
Baraccus
6 1,270
http://arxiv.org/abs/1006.0199 From twistors to twisted geometries Laurent Freidel, Simone Speziale 9 pages...
Jul23-10 06:15 PM
MTd2
3 1,506
Hi, I have a short question about gauge theories and constraints. Imagine I have a symmetry algebra, and I gauge...
Jul23-10 04:59 PM
torquil
1 1,113
Does anyone know where I can find the lagrangian for this? From memory I believe it looks something like S =...
Jul23-10 11:53 AM
jdstokes
3 1,147
In classical general relativity it is known that angle of deflection is proportional to radius-1 from the center of...
Jul23-10 10:38 AM
exponent137
1 844
I don't know if it is the correct sub-forum, if I choose wrong then feel free to move the thread. I was listening...
Jul23-10 06:54 AM
xepma
3 1,831
The question I want to ask is pretty much in the title: Why is string theory becoming less of an excitement amongst...
Jul22-10 10:07 AM
MTd2
50 6,973
Here is a new LQG resource site. http://sites.google.com/site/quantumgravitytheory/ I hope it will be useful.
Jul21-10 11:00 PM
SuperStringboy
2 1,108

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