Questions tagged [ads-cft]
AdS/CFT is a special case of the holographic principle. It states that a quantum gravitating theory in Anti-de-Sitter (AdS) space is exactly equivalent to the gauge theory/Conformal Field Theory (CFT) on its boundary.
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Is the Ryu-Takayanagi (RT) formula calculating coarse-grained or fine-grained entropy?
I think it is computing the fine-grained entropy. However, I am confused by the case that when there is a black hole in the bulk. The Ryu-Takayanagi surface may include the horizon of the black hole ...
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Jafferis-Lewkowycz-Maldacena-Suh (JLMS) formula and tensor networks
While working with AdS/CFT, I am trying to look at the nature of the Jafferis-Lewkowycz-Maldacena-Suh (JLMS) formula in AdS/CFT, which is the statement that $S(\rho _{A}|\sigma _{A})=S_{\text{bulk}}(\...
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Lorentz transformation relations (in AdS space) between coordinates of observers derived from the generators of symmetries in the AdS space
I have a question related to the Anti de Sitter Space in General Relativity. Please help me understand it:
In Anti de Sitter (AdS) spacetime, the symmetry generator operators are associated with ...
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Question about large $N$ limit of CFT in the boundary
I read that in the limit of large $N$, the CFT on the boundary becomes classical. My question is if in such limit the physics in the bulk also becomes classical, or if we can still have a quantum ...
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Relating phase transition with symmetry-breaking according to Landau Theory
I am trying to reproduce the results from this paper where they find out the expression for the Landau functional to be
$$\psi(x,t,p)=\frac{1}{4}(\frac{1}{x}+6x+px^3-4tx^2)$$
Now we plot Landau ...
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What does the WZ term in a WZW action means for string theory on group manifolds?
Let $G$ be a semi-simple Lie group. By Cartan's criterion its Killing form $B(X,Y)$ on $\frak g$ is non-degenerate. We can use it to define an inner product on the whole group by left translation
$${\...
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Nature of spacetime in the holographic boundary
My understanding from popular science articles is that the boundary is a field theory that has no gravity and has one less spatial dimension than the bulk.
However, I am not sure I understood this ...
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Divergence of gauge kinetic coupling at the AdS boundary
This is the Einstein-Maxwell-Dilaton Gravity action:
\begin{eqnarray*}
S_{EM} = -\frac{1}{16 \pi G_5} \int \mathrm{d^5}x \sqrt{-g} \ [R - \frac{f(\phi)}{4}F_{MN}F^{MN} -\frac{1}{2}D_{M}\phi D^{M}\...
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Integrating out the 5th dimension in AdS/CFT
My main understanding of AdS/CFT is through the idea that the partition functions on the boundary and bulk are equivalent when expressed in terms of source fields $J_0$. On the boundary $J_0$ is a ...
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What are some books on Condensed Matter Physics like Horatiu Nastase's String Theory for Condensed Matter Physics?
Are there more books and review papers on the applications of string theory methods like AdS/CFT on condensed matter systems like the one by Horatiu Nastase?
https://www.cambridge.org/core/books/...