Citation

BibTex format

@article{Drukker:2020:10.1007/jhep07(2020)101,
author = {Drukker, N and Giombi, S and Tseytlin, AA and Zhou, X},
doi = {10.1007/jhep07(2020)101},
journal = {The Journal of High Energy Physics},
title = {Defect CFT in the 6d (2,0) theory from M2 brane dynamics in AdS7×S4},
url = {http://dx.doi.org/10.1007/jhep07(2020)101},
volume = {2020},
year = {2020}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Surface operators in the 6d (2,0) theory at large $N$ have a holographicdescription in terms of M2 branes probing the AdS$_7 \times S^4$ M-theorybackground. The most symmetric, 1/2-BPS, operator is defined over a planar orspherical surface, and it preserves a 2d superconformal group. This includes,in particular, an $SO(2,2)$ subgroup of 2d conformal transformations, so thatthe surface operator may be viewed as a conformal defect in the 6d theory. Thedual M2 brane has an AdS$_3$ induced geometry, reflecting the 2d conformalsymmetry. Here we use the holographic description to extract the defect CFTdata associated to the surface operator. The spectrum of transversefluctuations of the M2 brane is found to be in one-to-one correspondence with aprotected multiplet of operator insertions on the surface, which includes thedisplacement operator. We compute the one-loop determinants of fluctuations ofthe M2 brane, and extract the conformal anomaly coefficient of the sphericalsurface to order $N^0$. We also briefly discuss the RG flow from thenon-supersymmetric to the 1/2-BPS defect operator, and its consistency with a"$b$-theorem" for the defect CFT. Starting with the M2 brane action, we thenuse AdS$_3$ Witten diagrams to compute the 4-point functions of the elementarybosonic insertions on the surface operator, and extract some of the defect CFTdata from the OPE. The 4-point function is shown to satisfy superconformal Wardidentities, and we discuss a related subsector of "twisted" scalar insertions,whose correlation functions are constrained by the residual superconformalsymmetry.
AU  - Drukker,N
AU  - Giombi,S
AU  - Tseytlin,AA
AU  - Zhou,X
DO  - 10.1007/jhep07(2020)101
PY  - 2020///
SN  - 1029-8479
TI  - Defect CFT in the 6d (2,0) theory from M2 brane dynamics in AdS7×S4
T2  - The Journal of High Energy Physics
UR  - http://dx.doi.org/10.1007/jhep07(2020)101
UR  - http://arxiv.org/abs/2004.04562v2
VL  - 2020
ER  -
Download

Note to staff:  Adding new publications to a research group

  1. Log in to Symplectic.
  2. Click on Menu > Create Links
  3. Choose what you want to create links between – in this case ‘Publications’ and ‘Organisational structures’.
  4. Choose the organisational structure (research group) into which you want to link the publications and check the box next to it.
  5. Now check the box of any publication you want to add to that group. You can use the filters to find what you want and select multiple publications if necessary. 
  6. Scroll to the bottom and click the blue ‘Create new link’ button to link them.
  7. The publications will be added to the group, and will be displayed on the group publications feed within 24 hours (it is not immediate).

Any problems, talk to Tim Evans or the Faculty Web Team.