38 citations · 113 across the 11 of their papers we have counts for
5 papers · 1 filter
Entanglement entropy of fermions in a strange metal
Santanu Singh, Surajit Bera, Chenyuan Li +2
The subsystem-size dependence of ground-state entanglement entropy and its crossover to thermal entropy as a function of temperature are well understood for one-dimensional (1D) ga…
Quantum fluctuations lead to glassy electron dynamics in the good metal regime of electron doped KTaO3
Shashank Kumar Ojha, Sankalpa Hazra, Surajit Bera +10
One of the central challenges in condensed matter physics is to comprehend systems that have strong disorder and strong interactions. In the strongly localized regime, their subtle…
Dynamical mean-field theory for Rényi entanglement entropy and mutual Information in Hubbard Model
Surajit Bera, Arijit Haldar, Sumilan Banerjee
Quantum entanglement, lacking any classical counterpart, provides a fundamental new route to characterize the quantum nature of many-body states. In this work, we discuss an implem…
Renyi entanglement entropy of Fermi liquids and non-Fermi liquids: Sachdev-Ye-Kitaev model and dynamical mean field theories
Arijit Haldar, Surajit Bera, Sumilan Banerjee
We present a new method for calculating Renyi entanglement entropies for fermionic field-theories originating from microscopic Hamiltonians. The method builds on an operator identi…
Quench, thermalization and residual entropy across a non-Fermi liquid to Fermi liquid transition
Arijit Haldar, Prosenjit Haldar, Surajit Bera +2
We study the thermalization, after sudden and slow quenches, of an interacting model having a quantum phase transition from a Sachdev-Ye-Kitaev (SYK) non-Fermi liquid (NFL) to a Fe…