All Questions
Tagged with ads-cft research-level
28
questions
2
votes
3
answers
58
views
What is the dual asymptotic spacetime of a CFT on a particular flat manifold?
According to AdS/CFT correspondence, the dual theory of a boundary CFT on flat spacetime is defined on an asymptotically AdS spacetime. The nature of the bulk spacetime depends on the topology of the ...
- 785
1
vote
0
answers
25
views
How to derive Feffermann-Graham expansion for AdS Vaidya geometries?
Introduction
The Feffermann-Graham expansion for an asymptotically AdS spacetime [0] looks like Poincare AdS but with the flat space replaced by a more general metric i.e.
$$ds^2=\frac{1}{z^2}(g_{\mu \...
- 785
0
votes
0
answers
15
views
Why do we expect isometries of bulk side to be equivalent to symmetries of the CFT?
One can clearly see that the AdS bulk isometries form the $SO(d,2)$ symmetry of the $d$ dimensional CFT explicitly. Why does this occur: why don't the isometries of the spacetimes match up or the ...
- 785
3
votes
0
answers
95
views
Why is empty AdS identified with CFT vacuum and what do excited states correspond to?
I have a few questions regarding the AdS/CFT dictionary regarding the state-state map.
I have seen people identifying the empty AdS spacetime with a CFT vacuum.
What do they mean by "empty" ...
- 785
7
votes
0
answers
84
views
How to derive the probability distribution of reduced density matrix eigenvalues for randomly chosen pure states in Page's theorem?
Motivation
I am trying to reproduce the proof in Page's theorem as conjectured in the seminal paper Average Entropy of a Subsystem by Don N. Page. It is crucial in various resolutions of black hole ...
- 785
4
votes
2
answers
231
views
String theory hilbert space - Gas of free gravitons
I am trying to understand the arguments given in MAGOO in chapter 3.4.1(Hilbert Space of String Theory). The authors give descriptions of the Hilbert space of String Theory when we consider our theory ...
- 2,035
1
vote
0
answers
30
views
How to apply the boundary condition in the derivation of the 2-point function in MAGOO?
In the famous AdS/CFT review, in section 3.3.1 the authors give the two-point function of the operator $\mathcal{O}$ for which $\phi_0$ is a source, we write
$$
\langle\mathcal{O}(p)\mathcal{O}(q)\...
- 2,035
3
votes
0
answers
70
views
Question regarding the asymptotic values of out-of-time order correlators (OTOCs)
Quoting A bound on chaos by Maldacena, Shenker and Stanford:
Strong chaos, the butterfly effect, is a ubiquitous phenomenon in physical systems, explaining thermal behavior, among other things. In ...
user242231
2
votes
0
answers
328
views
Resources to start research on the SYK model, with AdS/CFT in mind
What are the main resources to learn the SYK model, focusing more on the AdS/CFT side rather than pure condensed matter theory, assuming a comfortable background in QFT, GR, and a bit of bosonic ...
1
vote
0
answers
94
views
dS/CFT in a positive curvature universe
Since Maldacena ground breaking theoretical discovery, have there been any succesfull efforts to try to transpose the AdS/CFT duality to our universe (not an AdS)?
- 131
5
votes
1
answer
184
views
Matrix Model in AdS/CFT & exact results
Matrix models appeared in the context of AdS/CFT while trying to calculate the Circular Wilson Loop. It was first noted by Erickson, Semenoff & Zarembo [hep-th/0003055] that the 2-loop ...
- 622
8
votes
0
answers
380
views
What is the physical interpretation of the Papadodimas/Raju mirror operators?
In this paper
http://arxiv.org/abs/1310.6335,
the authors discuss the firewall problem and contruct so called mirror operators appearing in the correlation function. The key part seems to be (2.6) ...
- 81
18
votes
1
answer
2k
views
What is the CFT dual to pure gravity on AdS$_3$?
Pure $2+1$-dimensional gravity in $AdS_3$ (parametrized as $S= \int d^3 x \frac{1}{16 \pi G} \sqrt{-g} (R+\frac{2}{l^2})$) is a topological field theory closely related to Chern-Simons theory, and at ...
- 181
15
votes
1
answer
1k
views
Asymptotic symmetry algebra
So after a lot of research, and tons and tons of papers that I've went through, I finally have some idea how to solve the equations that will give me candidates for the asymptotic symmetry group for ...
- 1,843
1
vote
0
answers
174
views
Questions about Type HE Matrix String Theory
I was reading the heterotic string section of this thesis desertation by Luboš Motl, since I think I now understand the Type IIA Matrix String Theory. The only thing I knew about Type HE Matrix ...
- 6,148