3 papers
cond-mat.stat-mech2020
Quantum Brownian Motion: Drude and Ohmic Baths as Continuum Limits of the Rubin Model
Avijit Das, Abhishek Dhar, Ion Santra +2
The motion of a free quantum particle in a thermal environment is usually described by the quantum Langevin equation, where the effect of the bath is encoded through a dissipative…
cond-mat.stat-mech2019
Kardar-Parisi-Zhang Scaling for an Integrable Lattice Landau-Lifshitz Spin Chain
Avijit Das, Manas Kulkarni, Herbert Spohn +1
Recent studies report on anomalous spin transport for the integrable Heisenberg spin chain at its isotropic point. Anomalous scaling is also observed in the time-evolution of non-e…
cond-mat.stat-mech2019
Nonlinear Fluctuating Hydrodynamics for the Classical XXZ Spin Chain
Avijit Das, Kedar Damle, Abhishek Dhar +4
Using the framework of nonlinear fluctuating hydrodynamics (NFH), we examine equilibrium spatio-temporal correlations in classical ferromagnetic spin chains with nearest neighbor i…