Dynamical quantum phase transitions: A brief survey

M Heyl - Europhysics Letters, 2019 - iopscience.iop.org
Nonequilibrium states of closed quantum many-body systems defy a thermodynamic
description. As a consequence, constraints such as the principle of equal a priori …

One-dimensional quantum many body systems with long-range interactions

S Maity, U Bhattacharya, A Dutta - Journal of Physics A …, 2019 - iopscience.iop.org
The presence of algebraically decaying long-range interactions may alter the critical as well
as topological behaviour of a quantum many-body systems. However, when the interaction …

Finite-temperature dynamical quantum phase transition in a non-Hermitian system

D Mondal, T Nag - Physical Review B, 2023 - APS
We investigate the interplay between non-Hermiticity and finite temperature in the context of
a mixed-state dynamical quantum phase transition (MSDQPT). We consider ap-wave …

Universal finite-time thermodynamics of many-body quantum machines from Kibble-Zurek scaling

R B. S, V Mukherjee, U Divakaran, A del Campo - Physical Review Research, 2020 - APS
We demonstrate the existence of universal features in the finite-time thermodynamics of
quantum machines by considering a many-body quantum Otto cycle in which the working …

Quantum synchronization in nanoscale heat engines

N Jaseem, M Hajdušek, V Vedral, R Fazio, LC Kwek… - Physical Review E, 2020 - APS
Owing to the ubiquity of synchronization in the classical world, it is interesting to study its
behavior in quantum systems. Though quantum synchronization has been investigated in …

Observing dynamical quantum phase transitions through quasilocal string operators

S Bandyopadhyay, A Polkovnikov, A Dutta - Physical Review Letters, 2021 - APS
We analyze signatures of the dynamical quantum phase transitions in physical observables.
In particular, we show that both the expectation value and various out of time order …

Growth of mutual information in a quenched one-dimensional open quantum many-body system

S Maity, S Bandyopadhyay, S Bhattacharjee, A Dutta - Physical Review B, 2020 - APS
We study the temporal evolution of the mutual information (MI) in a one-dimensional Kitaev
chain, coupled to a fermionic Markovian bath, subsequent to a global quench of the …

Unquenched—a memoir on non-equilibrium dynamics of quantum many-body systems: honoring Amit Dutta

S Sharma, T Nag, A Rajak, S Bandyopadhyay… - The European Physical …, 2024 - Springer
This short review explores the physics journey of Professor Amit Dutta, illuminating his
collaborative contributions with students and peers. We mainly focus on standard …

Driven quantum many-body systems and out-of-equilibrium topology

S Bandyopadhyay, S Bhattacharjee… - Journal of Physics …, 2021 - iopscience.iop.org
In this review we present some of the work done in India in the area of driven and out-of-
equilibrium systems with topological phases. After presenting some well-known examples of …

Ubiquity of zeros of the Loschmidt amplitude for mixed states in different physical processes and its implication

XY Hou, QC Gao, H Guo, Y He, T Liu, CC Chien - Physical Review B, 2020 - APS
The Loschmidt amplitude of the purified states of mixed-state density matrices is shown to
have zeros when the system undergoes a quasistatic, quench, or Uhlmann process. While …