20 citations · 20 across the 1 of their papers we have counts for
4 papers
A Floquet perturbation theory for periodically driven weakly-interacting fermions
Roopayan Ghosh, Bhaskar Mukherjee, K. Sengupta
We compute the Floquet Hamiltonian for weakly interacting fermions subjected to a continuous periodic drive using a Floquet perturbation theory (FPT) with the interaction amp…
Entanglement measures and non-equilibrium dynamics of quantum many-body systems: a path integral approach
Roopayan Ghosh, Nicolas Dupuis, Arnab Sen +1
We present a path integral formalism for expressing matrix elements of the density matrix of a quantum many-body system between any two coherent states in terms of standard Matsuba…
Disorder-induced Enhancement of Entanglement Growth in One Dimension: Information Leakage at the scale of localization length
Roopayan Ghosh, Arnab Das
When a group of compactly packed free fermions is allowed to spread over an empty one-dimensional lattice, the spreading particles can create entanglement between different parts o…
Ramp and periodic dynamics across non-Ising critical points
Roopayan Ghosh, Arnab Sen, K. Sengupta
We study ramp and periodic dynamics of ultracold bosons in an one-dimensional (1D) optical lattice which supports quantum critical points separating a uniform and a or …