Entanglement and Chaos near critical point in strongly coupled Gauge theory

Debanjan Karan; Sanjay Pant

doi:10.1140/epjc/s10052-024-12463-9

2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2024) 84: 113
https://doi.org/10.1140/epjc/s10052-024-12463-9

Regular Article - Theoretical Physics

Entanglement and Chaos near critical point in strongly coupled Gauge theory

Debanjan Karan¹ and Sanjay Pant²^b

¹ International Centre for Theoretical Sciences (ICTS-TIFR), Tata Institute of Fundamental Research, Shivakote, Hesaraghatta, 560089, Bengaluru, India
² Department of Physics, Indian Institute of Technology Ropar, 140 001, Rupnagar, Punjab, India

^b 2018phz0012@iitrpr.ac.in

Received: 2 December 2023
Accepted: 19 January 2024
Published online: 2 February 2024

Abstract

We perform a holographic study of the high and low temperature behaviours of logarithmic negativity (LN) and entanglement wedge cross section (EWCS) in a large N strongly coupled thermal field theory with critical point, having a well defined gravity dual known as 1RC black hole. The bulk theory accommodates a dimensionless parameter $ξ$ $\xi$ , proportional to the charge of the 1RC black hole. Holographically, $ξ \to 2$ $\xi \rightarrow 2$ limit ensures an existence of a critical point in the dual boundary theory. We show that the logarithmic negativity in low and high temperature limits enhances with increasing $ξ$ $\xi$ . We analytically compute the EWCS in low and high temperature limits and find an agreement with the previously reported numerical results. We holographically explore the correlation between two identical copies of thermal field theory with critical point forming a thermofield double state (TFD) by computing the thermo mutual information (TMI). TMI shows an increasing behaviour with respect to the width of the boundary region. Furthermore, we study the chaotic behaviour of the field theory by analyzing a shock wave in the dual eternal 1 RC black hole and then estimate the degradation of TMI. The rate of such disruption of TMI slows down as the value of critical parameter $ξ$ $\xi$ takes higher values.

© The Author(s) 2024

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