All Questions
Tagged with ads-cft gauge-theory
15
questions
2
votes
0
answers
37
views
Interpretation of two independet solutions of equations of motion in AdS/CFT
I am trying to understand the statement in AdS/CFT correspondence, that from the two independent solutions of equations of motion in the bulk, one corresponds to the source of operator $\mathcal{O} (x)...
- 4,883
3
votes
1
answer
283
views
Why do we not try to describe $4$d quantum gravity with a $3$d CFT?
In AdS/CFT correspondence, one mostly studies the case with AdS$_5 \times$ S$_5$ on the string side and $4$d $\mathcal{N}=4$ Super Yang-Mills on the gauge field theory side. Real-world observations ...
- 1,723
1
vote
1
answer
239
views
Is the gauge/gravity (or AdS/CFT) duality believed to be exact?
I was wondering about the implications of the gauge/gravity (or AdS/CFT in a more restrictive sense) duality for the way we deal with physical theories, and I was wondering if the duality was believed ...
- 1,723
4
votes
1
answer
275
views
What happens to the $U(1)$ factor in the $U(N)$ SYM gauge group of the AdS/CFT correspondence?
I'm learning about the AdS/CFT correspondence. I know that from the open string perspective, the dynamics on a stack of $N$ coincident $D3$-branes is given by a $\mathcal{N} = 4$ Super Yang Mills ...
- 701
4
votes
1
answer
886
views
What is really this Gauge-Gravity duality all about?
I have no background in string theory but have a reasonable exposure to quantum field theory including the quantization of gauge theories. In simple terms what is this Gauge-Gravity duality all about ...
- 26.8k
4
votes
0
answers
146
views
Global $SU(N)$ on the gravity side in AdS/CFT
For AdS/CFT to make sense, symmetries must match between the AdS side and the CFT side. Gauge symmetries are redundancies, not symmetries, therefore the CFT can have a (large) gauge symmetry, say $SU(...
- 536
1
vote
0
answers
228
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Central Charge of large $N$ Gauge theory in 't Hooft limit
It is well known that large N gauge theory in t'Hooft limit has central charge ~ $N^2$ I want to convince myself in this by considering simple example of:
1 flavor(meaning that we have only one ...
7
votes
2
answers
421
views
Is there some no-go theorem for $D=9$ Kaluza Klein QCD+EM?
While QCD is a typical product of AdS/CFT and some other research trends in extra dimensions, I have never found in the literature an example producing the non-chiral part of the standard model, ...
- 1,943
8
votes
1
answer
651
views
Charged CFT observables and AdS/CFT
I have a simple question regarding the holographic dictionary when mapping operators on the CFT side to those in AdS.
One piece of the dictionary is that a global symmetry maps onto a gauge symmetry ...
- 746
5
votes
0
answers
311
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AdS/CFT-duality: How does the $U(1)$ decouple form the $U(N)$?
A stack of N coincident D3-branes on its world-volume describe, at the lowest order in $\alpha'$ and in absence of non-trivial background fields, a supersymmetric $U(N)$ gauge theory as explained in ...
- 3,872
1
vote
0
answers
181
views
Why gauge field should be vanishing on horizon?
When considering an AdS spacetime including a black hole, matter field and gauge field, the value of temporal component $A_t$ of the gauge potential $A_\mu$ on horizon always is set be zero, even the ...
- 369
1
vote
1
answer
168
views
D7 brane profile
I have a doubt about the differential equation leading to the profile of a d7 brane embedded in a 10 dimensional space. According to http://arxiv.org/abs/hep-th/0306018, equation (6), we have the ...
- 105
6
votes
0
answers
444
views
Moduli Space of $\mathcal{N}=4$ SYM on $\mathbb{R} \times S^3$
When we define $\mathcal{N}=4$ SYM on flat Minkowski space, the supersymmetric vacua are parametrized by scalars living in the cartan subalgebra of the gauge group. A generic point in the moduli space ...
- 2,667
6
votes
1
answer
410
views
Master Field Large N limit
I would like to ask a question about the so-called ''Master Field''. As far as I understand, this represents a classical configuration in the large n limit (saddle point solution) but there is no ...
6
votes
1
answer
486
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 ...
- 4,619