3 papers
quant-ph2026
A Gauge-Covariant Geometric Framework for Non-Hermitian Quantum Systems
Gargi Das, Sudhanshu Shekhar, Bhabani Prasad Mandal
We develop a comprehensive, gauge-covariant geometric framework for non-Hermitian quantum systems in the quasi-Hermitian regime, that is, the region of parameter space where the no…
quant-ph2026
Quantum phase transitions and entanglement entropy in a non-Hermitian Jaynes-Cummings model
Gargi Das, Aritra Ghosh, Bhabani Prasad Mandal
In this paper, we describe some interesting properties of a non-Hermitian Jaynes-Cummings model. For this particular model, it is known that the Hilbert space can be described by i…
quant-ph2025
Thermal properties of a non-Hermitian system interacting with oscillator
Gargi Das, Bhabani Prasad Mandal
In this work, we consider a two level pseudo-Hermitian system in contact with a thermal bath to study various thermodynamic properties. The system is realized in terms of…