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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 67,903
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Jul14-12 08:32 AM
ZapperZ
1 26,925
we sway into scifiction which i want to be realistic: How is it inside Subspace or Hyperspace or a cosmic string...
Jan31-10 02:14 PM
Naty1
1 1,371
Hi! That's my first thread and I apologize for my bad English, but there's a question in my mind that makes me...
Jan31-10 08:00 AM
Tack
5 1,754
Can every QFT/CFT be interpreted at least approximately as a theory of gravity? If not, is it known which QFT/CFTs...
Jan30-10 12:31 PM
Physics Monkey
7 1,618
I know the main points of string theory, but can someone tell me where the evidence is that it could be true?
Jan30-10 08:42 AM
arivero
29 3,130
Hi everybody, I would like to chat about the physics of loop quantum cosmology. Let me list a few broad topics I'm...
Jan29-10 02:30 PM
marcus
19 2,796
In a spacetime with a black hole, where is the horizon in the CFT? Also, if a black hole spacetime corresponds to a...
Jan29-10 09:54 AM
Physics Monkey
4 1,880
I try to check the calculation that Kaluza and Klein originally did. It is in the first pages of Pope's lecture notes:...
Jan29-10 04:56 AM
DailyMather
1 2,290
Does the theory say that an electron is a single vibrating string? How many parameters are needed to describe that...
Jan28-10 11:36 AM
bapowell
1 938
In string theory, a solution involving flat 10D space seems like a valid solution. The Universe could be described by...
Jan26-10 04:35 PM
arivero
2 2,138
It could be worthwhile to head a thread with some explanation about why D=11 is predictive, or perhaps to debate if it...
Jan26-10 10:51 AM
arivero
9 2,607
These are posts from the bibliography thread (which has enough to do just listing the new papers, without discussing...
Jan26-10 02:50 AM
czes
12 1,871
The most recent version of the theorem, as stated by Nikonorov in 2004 Let G a connected compact semisimple Lie...
Jan23-10 10:48 AM
arivero
2 1,639
Hello all, I'm just wondering, have physicists come up with an accepted theory for quantum gravity?
Jan23-10 02:25 AM
tom.stoer
4 1,346
Hello everybody I noticed here are people knowing Loop Quantum Gravity. I am not a professional physicist but I like...
Jan22-10 11:18 AM
czes
12 2,147
I already tried this some month ago: Is there a list (paper, web-site, ...) of SUGRA theories containing the...
Jan22-10 07:39 AM
arivero
21 2,350
In general relativity we assume that connection is torsion free. However from a purely geometrical viewpoint, the...
Jan22-10 01:10 AM
tom.stoer
5 1,864
what problems are solved by the theory of 11 different dimensions instead of just 1-4 proposed in the m theory and...
Jan22-10 12:23 AM
clm321
10 1,687
Before I go and ask questions that many of you might be able to answer very easily, I'm letting everyone know that I...
Jan21-10 01:40 PM
arivero
7 1,467
If we start with minkowski spacetime in 4 dimensions and then add several curled up spatial dimensions attached at...
Jan21-10 08:34 AM
arivero
2 959
In string theory, what are the fundemental properties of a string? Is the tension in the string a constant at all...
Jan21-10 08:15 AM
arivero
5 1,600
Hi there, I 've recently looked at how the Nambu-Goto action of an open string can be derived from the proper area...
Jan19-10 04:07 PM
tom.stoer
2 1,838
i don't know much about strings and branes, but i'm under the impression with branes there could be other universes...
Jan17-10 07:21 PM
matt010nj
20 5,553
I thought I started a thread on this topic, but than I could not find it when I looked later, so here goes again. I...
Jan17-10 04:47 PM
Finbar
1 1,039
Can someone please explain the holographic principle to me? I'm decent in my physics and math, so you don't need...
Jan16-10 10:17 AM
Finbar
16 3,748
Ilja Schmelzer, the author of http://arxiv.org/gr-qc/0205035 just introduced himself in one of the Philosophy...
Jan15-10 09:33 AM
Vanadium 50
21 4,294
Hello all. I am currently reading 'The Elegant Universe' and I'm puzzled by one key thing that is really starting...
Jan15-10 03:35 AM
Fra
6 1,671
To be more specific I mean the 3 familiar spacial dimensions not extra ones(unless I guess they are large enough for...
Jan14-10 04:03 AM
arivero
5 2,022
In this text is explained why our universe exists and why there are nature’s laws. The explanation is given in two...
Jan13-10 11:39 AM
p-brane
1 1,296
Has anybody studied this paper? http://arxiv.org/abs/0909.0212v4 Comprehensive Solution to the Cosmological...
Jan13-10 11:31 AM
p-brane
6 2,495
The logic of spin-2 gravitons is that GR predicts gravitational waves, and in QM, all waves are also particles. ...
Jan12-10 02:43 AM
arivero
21 3,889
In the news there is a lot of "past 10 years", from Bush v.s Gore and 9-11, to Iraq and electing first Black...
Jan8-10 12:21 AM
marcus
1 1,092
Since there are several people here who intently follow the developements of LQG, I was wondering if someone could...
Jan7-10 11:25 PM
marcus
12 2,454
Three new papers appeared this week which strongly reinforce the Loop program. 1. The Ashtekar Sloan paper shows...
Jan7-10 10:34 PM
ensabah6
13 2,146
If I'm correct in thinking the universe is made up of one dimensional strings: a) what do the stings in the normal 3...
Jan7-10 02:45 PM
Pjpic
0 1,053
Strings live in 9+1 world, M, 10+1 one line of criticism is string theory is unable to account for the number of...
Jan7-10 10:07 AM
arivero
20 2,784
It is my understanding that in string theory, loop quantum gravity, the 'asymptotic safety' approach, and in...
Jan6-10 04:21 AM
tom.stoer
5 2,708
We will get a chance to gauge the progress in LQG---how far along they are in dealing with the main outstanding...
Jan6-10 04:15 AM
tom.stoer
5 1,751
I've heard a lot about AdS/CFT lately as an approach to solve strongly coupled field theories such as QCD and...
Jan6-10 04:04 AM
tom.stoer
5 2,340
Can anyone help me with explaining what is Brane Tension (t_3) I'm reading an article on cosmology, and I need to...
Jan5-10 05:53 AM
Chalnoth
3 1,934
what odds do you guys give the L8 theory of everything being correctly proven at the LHC?
Jan4-10 02:21 PM
cary cato
0 1,215

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