51 citations · 212 across the 14 of their papers we have counts for
4 papers · 1 filter
Microscopic quantum generalization of classical Liénard oscillators
Srijan Bhattacharyya, Arnab Ghosh, Deb Shankar Ray
Based on a system-reservoir model and an appropriate choice of nonlinear coupling, we have explored the microscopic quantum generalization of classical Liénard systems. Making use…
Parametric oscillations in a dissipative bosonic Josephson junction
Abhik Kumar Saha, Deb Shankar Ray, Bimalendu Deb
We study the dynamics of a nonlinear dissipative bosonic Josephson junction (BJJ) with a time-dependent sinusoidal perturbation in interaction term. We demonstrate parametric reson…
Fluctuation corrections on thermodynamic functions: Finite size effect
Sudarson Sekhar Sinha, Arnab Ghosh, Deb Shankar Ray
The explicit thermodynamic functions, in particular, the specific heat of a spin system interacting with a spin bath which exerts finite dissipation on the system are determined. W…
Coherent state of a weakly interacting ultracold Fermi gas
Arnab Ghosh, Sudarson Sekhar Sinha, Deb Shankar Ray
We examine the weakly interacting atoms in an ultracold Fermi gas leading to a state of macroscopic coherence, from a theoretical perspective. It has been shown that this state can…