7 papers · 1 filter
Interferometric and Bipartite OTOC for Non-Markovian Open Quantum Spin-Chains and Lipkin-Meshkov-Glick Model
Baibhab Bose, Devvrat Tiwari, Subhashish Banerjee
The information scrambling phenomena in an open quantum system modeled by Ising spin chains coupled to Lipkin-Meshkov-Glick (LMG) baths are observed via an interferometric method f…
Thermodynamics of an Open Symmetric Quantum System
Baibhab Bose, Devvrat Tiwari, Subhashish Banerjee
For a subclass of a general symmetric Hamiltonian obeying anti-commutation relation with its conjugate, a Hermitian basis is found that spans the bi-orthonormal ener…
(Thermo-)dynamics of the spin-boson model in the weak coupling regime: Application as a quantum battery
Mahima Yadav, Devvrat Tiwari, Subhashish Banerjee
We investigate the spin-boson model's dynamical and thermodynamic features in the weak coupling regime using the weak coupling spin-boson (WCSB) and phase covariant (PC) master equ…
Quantum Chaos in Non-Markovian Open Quantum Systems: Interferometric OTOC, Loschmidt Echo and Commutator Operator Norm
Baibhab Bose, Devvrat Tiwari, Subhashish Banerjee
Out-of-time order correlators (OTOCs) are crucial tools for studying quantum chaos as they show distinct scrambling behavior for chaotic Hamiltonians. We calculate OTOC and analyze…
Quantum Thermodynamics of Open Quantum Systems: Nature of Thermal Fluctuations
Neha Pathania, Devvrat Tiwari, Subhashish Banerjee
We investigate the thermodynamic behavior of open quantum systems through the Hamiltonian of Mean Force, focusing on two models: a two-qubit system interacting with a thermal bath…
Strong coupling non-Markovian quantum thermodynamics of a finite-bath system
Devvrat Tiwari, Baibhab Bose, Subhashish Banerjee
The focus is on understanding the quantum thermodynamics of strongly coupled non-Markovian quantum systems. To this end, a non-trivial, non-Markovian model of a central spin surrou…