Tagged Questions
5
votes
2answers
109 views
What is the exact relationship between on-shell amplitudes and off-shell correlators in AdS/CFT?
In this answer to a question, it is mentioned that in the AdS/CFT correspondence, on-shell amplitudes on the AdS side are related to off-shell correlators on the CFT side.
Can somebody explain this ...
7
votes
1answer
188 views
Introductory examples of AdS/CFT duality
I would like to know, what are the simplest/starting/basic examples that are typically used to introduce students to how AdS/CFT really works? (not the MAGOO paper, as I am not sure it has concrete ...
6
votes
0answers
141 views
Does local physics depend on global topology?
Motivating Example
In standard treatments of AdS/CFT (MAGOO for example), one defines $\mathrm{AdS}_{p+2}$ as a particular embedded submanifold of $\mathbb R^{2,p+1}$ which gives it topology ...
3
votes
1answer
123 views
“Hard wall”/ “soft wall”
I have encountered those terms in various places. As I understand it, "soft wall" can correspond to a smooth cutoff of some spacetime, while "hard wall" can be a sharp one, which is be described in ...
2
votes
1answer
188 views
't Hooft limit of coupling fundamental fermions to Chern-Simons theory
This question is in reference to this paper: arXiv:1110.4386 [hep-th].
I would like to know what is the derivation or a reference to the proof of their crucial equation 2.3 (page 12).
In their ...
1
vote
0answers
68 views
Good introductory books on AdS/CFT correspondence [duplicate]
Possible Duplicate:
Introduction to AdS/CFT
Since my question in a similar topic was deleted, I'll ask away and hope ppl won't come here telling me: this was already asked! :\
I have a ...
5
votes
1answer
305 views
Taking the continuum limit of $U(N)$ gauge theories
I would like to draw your attention to appendix $C$ on page 38 of this paper.
The equation $C.2$ there seems to be evaluating the sum $\sum_R \chi _R (U^m)$ in equation 3.16 of this paper. I ...
8
votes
1answer
174 views
Derivation of the basic equation for Witten diagrams
I could understand the derivation of the "bulk-to-boundary" propagators ($K$) for scalar fields in $AdS$ but the iterative definition of the "bulk-to-bulk" propagators is not clear to me.
On is ...
5
votes
2answers
599 views
Recommendations for time-line and road map in graduate school towards specializing in Maldacena's conjecture
This question was asked on Theoretical Physics Stackexchange and was grossly misread and closed.
I am again posting the question here hoping to get some valuable insights.
Also some people were ...
2
votes
0answers
338 views
Correlators at large N and large N factorization
I am having this very basic problem. In e.g Maldacena's AdS/CFT review (0309246) (page 5), he has defined operators as $\mathcal{O}=N\,{\rm tr}[f(M)]$ for some matrices $M$ and got the connected ...
5
votes
1answer
436 views
Viscosity/Entropy ratio and unitary evolution in quantum gravity
Calculations of the shear viscosity of the quark-gluon plasma (QGP), observed in heavy ions collisions, are performed via the AdS/CFT correspondence [ref1]. One finds that the shear viscosity of the ...
