English

Holographic R\'enyi entropy for two-dimensional $\mathcal{N}$=(2,2) superconformal field theory

High Energy Physics - Theory 2017-06-23 v1

Abstract

We investigate the holographic R\'enyi entropy for two-dimensional N=(2,2)\mathcal N=(2,2) superconformal field theory (SCFT), which is dual to N=2\mathcal N=2 supergravity in AdS3_3 background. In SCFT we have the stress tensor, current, and their supersymmetric partners, and in supergravity we have the graviton, vector field, and two gravitinos. We get the R\'enyi mutual information of two short intervals on complex plane in expansion by the cross ratio xx to order x4x^4, and R\'enyi entropy of one interval on torus in expansion by q=exp(2πβ/L)q=\exp(-2\pi\beta/L), with β\beta being the inverse temperature and LL being the spatial period, to order q2q^2. We calculate in both the supergravity and SCFT sides, and find matches of the results.

Keywords

Cite

@article{arxiv.1611.00546,
  title  = {Holographic R\'enyi entropy for two-dimensional $\mathcal{N}$=(2,2) superconformal field theory},
  author = {Zhibin Li and Jia-ju Zhang},
  journal= {arXiv preprint arXiv:1611.00546},
  year   = {2017}
}

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14 pages