568 citations · 1.1k across the 16 of their papers we have counts for
9 papers · 1 filter
PT phase transition in a (2+1)-d relativistic system
Bhabani Prasad Mandal, Brijesh K. Mourya, Kawsar Ali +1
We study a massless Dirac particle with PT symmetric non-Hermitian Rashba interaction in the background of Dirac oscillator potential to show the PT phase transition in a (2+1) dim…
Hartman-Fletcher effect for array of complex barriers
Ananya Ghatak, Mohammad Hasan, Bhabani Prasad Mandal
We calculate the time taken by a wave packet to tunnel through a series of complex barrier potentials using stationary phase method to show its saturation (Hartman-Fletcher effect)…
A black potential for spin less particles
Ananya Ghatak, Mohammad Hasan, Bhabani Prasad Mandal
We consider the most general non-Hermitian Hulthen potential to study the scattering of spin-less relativistic particles. The conditions for CC, SS and CPA are obtained analyticall…
Reciprocity in parity violating non-Hermitian systems
Ananya Ghatak, Brijesh Kumar Mourya, Raka Dona Ray Mandal +1
Reciprocity is shown so far only when the scattering potential is either real or parity symmetric complex. We extend this result for parity violating complex potential by consideri…
Critical coupling and coherent perfect absorption for ranges of energies due to a complex gain and loss symmetric system
Mohammad Hasan, Ananya Ghatak, Bhabani Prasad Mandal
We consider a non-Hermitian medium with a gain and loss symmetric, exponentially damped potential distribution to demonstrate different scattering features analytically. The condit…
Various Scattering Properties of a New PT-symmetric non-Hermitian potential
Ananya Ghatak, Raka Dona Ray Mandal, Bhabani Prasad Mandal
We complexify a 1-d potential which exhibits bound, reflecting and free states to study various properties of a non-Hermitian system. This potential turns out a PT-symmetric non-He…
Comparison of different approaches of finding the positive definite metric in pseudo-Hermitian theories
Ananya Ghatak, Bhabani Prasad Mandal
To develop a unitary quantum theory with probabilistic description for pseudo- Hermitian systems one needs to consider the theories in a different Hilbert space endowed with a posi…
Spectral singularity and deep multiple minima in the reflectivity in non-Hermitian (complex) Ginocchio potential
Ananya Ghatak, Bhabani Prasad Mandal, Zafar Ahmed
We bring out the existence of at most one spectral singularity (SS) and deep multiple minima in the reflectivity of the non-Hermitian (complex) Ginocchio potential. We find a param…
Entangled Quantum State Discrimination using Pseudo-Hermitian System
Ananya Ghatak, Bhabani Prasad Mandal
We demonstrate how to discriminate two non-orthogonal, entangled quantum state which are slightly different from each other by using pseudo-Hermitian system. The positive definite…