title: Development of a semiclassical method to compute mobility and diffusion coefficient of a Brownian particle in a nonequilibrium environment.
abstract: We explore the issue of a quantum-noise-induced directed transport of an overdamped Brownian particle that is allowed to move in a spatially periodic potential. The established system-reservoir model has been employed here to study the quantum-noise-induced transport of a Brownian particle in a periodic potential, where the reservoir is being modulated externally by a Gaussian-colored noise. The mobility of the Brownian particle in the linear response regime has been calculated. Then, using Einstein's relation, the analytical expression for the diffusion rate is evaluated for any arbitrary periodic potential for the high-temperature quantum regime.
authors.affiliation: Department of Chemistry, Bengal Engineering and Science University, Shibpur, Howrah 711103, India.
authors.forename: Anindita
authors.initials: A
authors.lastname: Shit
authors.forename: Pradipta
authors.initials: P
authors.lastname: Ghosh
authors.forename: Sudip
authors.initials: S
authors.lastname: Chattopadhyay
authors.forename: Jyotipratim Ray
authors.initials: JR
authors.lastname: Chaudhuri
mesh_terms: D000465:Algorithms; D004058:Diffusion; D015233:Models, Statistical; D008962:Models, Theoretical; D016011:Normal Distribution; D009991:Oscillometry; D010825:Physics / Q000379:methods*; D011789:Quantum Theory; D013696:Temperature