paper

Correlation functions, entanglement and chaos in the /-deformed CFTs

arXiv:1907.12603 · doi:10.1007/JHEP02(2020)088

Abstract

In this paper, we regard the /-deformed CFTs as perturbation theories and calculate the first order correction of the correlation functions due to the /-deformation. As applications, we study the Rényi entanglement entropy of excited state in the /-deformed two-dimensional CFTs. We find, up to the perturbation first order of the deformation, the Rényi entanglement entropy of locally excited states will acquire a non-trivial time dependence. The excess of the Rényi entanglement entropy of locally excited state will also be dramatically changed up to order . Furthermore, the out of time ordered correlation function is investigated to confirm that the /-deformations do not change the maximal chaotic behavior of holographic CFTs up to the first order of the deformations.

1+42 pages, Typos corrected, published version

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