All Questions
Tagged with ads-cft conformal-field-theory
119
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Why Is There No Oscillator Representation for Operators in Planar ${\cal N}=4$ SYM Theory?
I'm studying the planar ${\cal N}=4$ Super Yang-Mills (SYM) theory and I'm curious about the representations of its operators, specifically the Hamiltonian and the dilatation operator. In many quantum ...
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What are single-, double- and multi-trace operators in AdS/CFT?
Can someone explain what are single-, double- and multi-trace operators are in AdS/CFT? I am a senior undergrad and only recently started studying AdS/CFT from TASI lectures and could not make much ...
- 904
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2
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Why does no one add Einstein-Hilbert term to CFT in AdS/CFT?
As I work through AdS/CFT exercises, it struck me that there seemed no one doing the following.
Suppose we have a holographic CFT. By some reeconstruction method, we can write CFT operators in terms ...
- 41
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Gravity dual of the string world-sheet CFT?
The AdS/CFT correspondence conjectures a duality between a $(D+1)$ dimensional gravity theory in asymptotic AdS spacetime with a $D$ dimensional conformal field theory. Is there any sense in asking ...
- 125
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Quantum corrections in Holography
AdS/CFT stablish that there is some kind of correspondence between the ${\cal N}=4$ SYM theory and strings in $AdS_5\times S^5$ space-time. I know, for instance that 1/2 BPS operators like Tr$(\phi_1^...
- 411
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Reverse AdS/CFT correspondence?
$\text{AdS}_{n}/\text{CFT}_{n-1}$ correspondence provides a dictionary for one-to-one mapping observables in bulk gravity to boundary conformal field theories. However, does the reverse correspondence ...
user375448
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OPE Coefficients in Holography
I am having trouble reproducing a calculation from the paper "Holography from Conformal Field Theory".
In a 2d CFT, consider an operator $\mathcal{O}$ in mean field theory (MFT) with ...
4
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243
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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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What do bulk Fourier modes look like in the boundary theory?
Suppose we have a bulk theory that has some holographic CFT dual at the boundary. Suppose we construct an operator that 'looks like' (whatever that needs to mean) a Fourier mode in the bulk ...
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Explanation of Multiplet Shortening and Unitary Bounds in Supersymmetry (AdS/CFT): Algebraic Insights
I am currently studying this paper and I'm struggling to grasp the concepts of multiplet shortening and unitary bounds in the context of supersymmetry. I am specifically interested in obtaining a ...
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What does it mean for a quantum field theory to "live" on a manifold?
I was attending lectures om holography where the lecturer kept on mentioning that a QFT lives on a Cauchy slice. What does that mean?
Is it such that each point of the slice is associated to a unique ...
- 101
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Gluon scattering in AdS
In recent years there has been interest in computing scattering amplitudes of (super)gluons in Anti-de Sitter (AdS) space in all kinds of stringy theories in different spacetime dimensions (see for ...
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51
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Advanced string theory book recommendations [duplicate]
Let's say I fully understand Polchinski books on string theory
Are there any recommended and more advanced book on strings?
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Pedagogical reference to learn how to work with CFTs?
I know very little about AdS/CFT, but I am considering looking more into quantum gravity for future research topics. From those of you who have already "conquered" AdS/CFT, I was wondering ...
- 65
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In AdS/CFT, do we have Weyl-invariance or only conformal invariance?
The asymptotic symmetry group of $AdS_{d+1}$ is $SO(d,2)$, which just so happens to be the conformal group of $d$-dimensional Minkowski spacetime. Therefore the boundary dual, if it exists, has ...
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