145 citations · 1k across the 22 of their papers we have counts for
22 papers
Dissipative nonlinear waves in a gravitating quantum fluid
Biswajit Sahu, Anjana Sinha, R. Roychoudhury
Nonlinear wave propagation is studied analytically in a dissipative, self-gravitating Bose Einstein condensate, in the framework of Gross-Pitaevskii model. The linear dispersion re…
Spectral Singularity in confined PT symmetric optical potential
Anjana Sinha, R. Roychoudhury
We present an analytical study for the scattering amplitudes (Reflection and Transmission ), of the periodic symmetric optical potential $ V(x) = \displayst…
Scattering in a varying mass PT symmetric double heterojunction
Anjana Sinha, R. Roychoudhury
We observe that the reflection and transmission coefficients of a particle within a double, PT symmetric heterojunction with spatially varying mass, show interesting features, depe…
Nonlinear localized modes in PT-symmetric optical media with competing gain and loss
Bikashkali Midya, Rajkumar Roychoudhury
The existence and stability of the nonlinear spatial localized modes are investigated in parity-time symmetric optical media characterized by a generic complex hyperbolic refractiv…
Nonlinear localized modes in PT-symmetric Rosen-Morse potential well
Bikashkali Midya, Rajkumar Roychoudhury
We report the existence and properties of localized modes described by nonlinear Schroedinger equation with complex PT-symmetric Rosen-Morse potential well. Exact analytical expres…
Non-Hermitian Oscillator and R-deformed Heisenberg Algebra
Rajkumar Roychoudhury, Barnana Roy, Partha Pratim Dube
A non-Hermitian generalized oscillator model, generally known as the Swanson model, has been studied in the framework of R-deformed Heisenberg algebra. The non-Hermitian Hamiltonia…