Quantum Brownian motion of a heavy particle: An adiabatic expansion

G. Iche and P. Nozieres

Physica A: Statistical Mechanics and its Applications, 1978, vol. 91, issue 3, 485-506

Abstract: We consider Brownian motion of a heavy particle (mass M), under conditions where the particle itself displays quantum effects, either because T is smaller than characteristic frequencies, or because the thermal wave packet size, h̵√MT, is bigger than characteristic lengths. A direct space method is developed which clearly separates wave packet spread from recoil effects (in the coupling to the heat bath): for a heavy particle, the latter are small, while the former are important in a quantum regime (a plain expansion in 1/M is thus precluded).

Date: 1978
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:91:y:1978:i:3:p:485-506

DOI: 10.1016/0378-4371(78)90194-2

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