46 citations · 187 across the 18 of their papers we have counts for
7 papers · 1 filter
Spin-orbit coupled spin-boson model : A variational analysis
Sudip Sinha, Subhasis Sinha, Sushanta Dattagupta
The spin-boson (SB) model is a standard prototype for quantum dissipation, which we generalize in this work, to explore the dissipative effects on a one-dimensional spin-orbit (SO)…
Exploring the properties of quantum scars in a toy model
Sudip Sinha, S. Sinha
We introduce the concept of ergodicity and explore its deviation caused by quantum scars in an isolated quantum system, employing a pedagogical approach based on a toy model. Quant…
Classical route to ergodicity and scarring in collective quantum systems
Sudip Sinha, Sayak Ray, Subhasis Sinha
Ergodicity, a fundamental concept in statistical mechanics, is not yet a fully understood phenomena for closed quantum systems, particularly its connection with the underlying chao…
Classical route to ergodicity and scarring phenomena in a two-component Bose-Josephson junction
Debabrata Mondal, Sudip Sinha, Sayak Ray +2
We consider a Bose-Josephson junction (BJJ) formed by a binary mixture of ultracold atoms to investigate the manifestation of coherent collective dynamics on ergodicity and quantum…
Quantum transitions, ergodicity, and quantum scars in the coupled top model
Debabrata Mondal, Sudip Sinha, S. Sinha
We consider an interacting collective spin model known as coupled top (CT), exhibiting a rich variety of phenomena related to quantum transitions, ergodicity, and formation of quan…
Dynamical route to ergodicity and quantum scarring in kicked coupled top
Debabrata Mondal, Sudip Sinha, Subhasis Sinha
Unlike classical system, understanding ergodicity from phase space mixing remains unclear for interacting quantum systems due to the absence of phase space trajectories. By conside…
Fingerprint of chaos and quantum scars in kicked Dicke model: An out-of-time-order correlator study
Sudip Sinha, Sayak Ray, Subhasis Sinha
We investigate the onset of chaos in a periodically kicked Dicke model (KDM), using the out-of-time-order correlator (OTOC) as a diagnostic tool, in both the oscillator and the spi…