
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

1 
26,703 
Hello everybody
I noticed here are people knowing Loop Quantum Gravity. I am not a professional physicist but I like...

Jan2210 11:18 AM
czes

12 
2,126 
I already tried this some month ago:
Is there a list (paper, website, ...) of SUGRA theories containing the...

Jan2210 07:39 AM
arivero

21 
2,337 
In general relativity we assume that connection is torsion free. However from a purely geometrical viewpoint, the...

Jan2210 01:10 AM
tom.stoer

5 
1,857 
what problems are solved by the theory of 11 different dimensions instead of just 14 proposed in the m theory and...

Jan2210 12:23 AM
clm321

10 
1,679 
Before I go and ask questions that many of you might be able to answer very easily, I'm letting everyone know that I...

Jan2110 01:40 PM
arivero

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1,457 
If we start with minkowski spacetime in 4 dimensions and then add several curled up spatial dimensions attached at...

Jan2110 08:34 AM
arivero

2 
950 
In string theory, what are the fundemental properties of a string?
Is the tension in the string a constant at all...

Jan2110 08:15 AM
arivero

5 
1,595 
Hi there,
I 've recently looked at how the NambuGoto action of an open string can be derived from the proper area...

Jan1910 04:07 PM
tom.stoer

2 
1,828 
i don't know much about strings and branes, but i'm under the impression with branes there could be other universes...

Jan1710 07:21 PM
matt010nj

20 
5,543 
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...

Jan1710 04:47 PM
Finbar

1 
1,034 
Can someone please explain the holographic principle to me?
I'm decent in my physics and math, so you don't need...

Jan1610 10:17 AM
Finbar

16 
3,719 
Ilja Schmelzer, the author of
http://arxiv.org/grqc/0205035
just introduced himself in one of the Philosophy...

Jan1510 09:33 AM
Vanadium 50

21 
4,268 
Hello all.
I am currently reading 'The Elegant Universe' and I'm puzzled by one key thing that is really starting...

Jan1510 03:35 AM
Fra

6 
1,664 
To be more specific I mean the 3 familiar spacial dimensions not extra ones(unless I guess they are large enough for...

Jan1410 04:03 AM
arivero

5 
2,009 
In this text is explained why our universe exists and why there are nature’s laws.
The explanation is given in two...

Jan1310 11:39 AM
pbrane

1 
1,293 
Has anybody studied this paper?
http://arxiv.org/abs/0909.0212v4
Comprehensive Solution to the Cosmological...

Jan1310 11:31 AM
pbrane

6 
2,479 
The logic of spin2 gravitons is that GR predicts gravitational waves, and in QM, all waves are also particles.
...

Jan1210 02:43 AM
arivero

21 
3,864 
In the news there is a lot of "past 10 years", from Bush v.s Gore and 911, to Iraq and electing first Black...

Jan810 12:21 AM
marcus

1 
1,089 
Since there are several people here who intently follow the developements of LQG, I was wondering if someone could...

Jan710 11:25 PM
marcus

12 
2,434 
Three new papers appeared this week which strongly reinforce the Loop program.
1. The Ashtekar Sloan paper shows...

Jan710 10:34 PM
ensabah6

13 
2,133 
If I'm correct in thinking the universe is made up of one dimensional strings: a) what do the stings in the normal 3...

Jan710 02:45 PM
Pjpic

0 
1,048 
Strings live in 9+1 world, M, 10+1
one line of criticism is string theory is unable to account for the number of...

Jan710 10:07 AM
arivero

20 
2,762 
It is my understanding that in string theory, loop quantum gravity, the 'asymptotic safety' approach, and in...

Jan610 04:21 AM
tom.stoer

5 
2,696 
We will get a chance to gauge the progress in LQGhow far along they are in dealing with the main outstanding...

Jan610 04:15 AM
tom.stoer

5 
1,745 
I've heard a lot about AdS/CFT lately as an approach to solve strongly coupled field theories such as QCD and...

Jan610 04:04 AM
tom.stoer

5 
2,334 
Can anyone help me with explaining what is Brane Tension (t_3)
I'm reading an article on cosmology, and I need to...

Jan510 05:53 AM
Chalnoth

3 
1,926 
what odds do you guys give the L8 theory of everything being correctly proven at the LHC?

Jan410 02:21 PM
cary cato

0 
1,210 
I'm trying to understand why asymptotic safety is a reasonable approach to quantum gravity.
Here is my present...

Jan410 02:13 PM
marcus

21 
3,500 
As far as I know a D0 brane is same as a point particle. If that is true then its presence in string theory would go...

Jan410 10:29 AM
ddimensions

1 
1,248 
Of these twelve candidates, please indicate the paper or papers which you think will contibute most significantly to...

Jan310 10:07 AM
atyy

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2,173 
Smolin and Rovelli and Ashketar point out that loop formalism can be extended to supersymmetry and to higher...

Jan310 03:56 AM
tom.stoer

13 
2,283 
Bee Hossenfelder had an interesting discussion of the term "emergent" back in mid 2008:...

Jan210 07:35 AM
Fra

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2,042 
Can you suggest any lecture notes/review articles/free books available in the internet at introductory level and which...

Dec3109 10:04 AM
chrispb

5 
3,917 
Interesting development. We already knew nonstring QG at UC Davis, but hadn't heard of LQG research in the UC Berkeley...

Dec3009 08:58 PM
marcus

0 
2,351 
5 years ago you could think of CDT and AsymSafe as part of a group of approaches called "Loop and allied QG". The...

Dec3009 07:01 PM
ensabah6

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13,339 
Does a given lattice of a torus (either twisted or untwisted) admit only certain orbifolds  ie. only specific N of...

Dec3009 05:20 PM
crackjack

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1,204 
http://arxiv.org/abs/0704.0646
I predict that this paper will become famous and frequently cited, not only by those...

Dec3009 07:13 AM
pellman

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7,426 
Do we all remember Feynman's "Single Electron Conjecture" that states, basically, that a single electron moving back...

Dec3009 02:57 AM
Demystifier

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I would have thought this standard crackpottery, but evidently it won "Best New Paper" from the University of Liege in...

Dec2909 07:05 PM
Metamite

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Kaku is famous for promoting string/Mtheory in a variety of books from hyperspace to physics of impossible, to name a...

Dec2909 05:45 PM
atyy

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5,946 