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Heat distribution function for motion in a general potential at low temperature

Hans C Fogedby1,2 and Alberto Imparato1

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We consider the 1D motion of an over-damped Brownian particle in a general potential in the low temperature limit. We derive an explicit expression for the probability distribution for the heat transferred to the particle. We find that the local minima in the potential yield divergent side bands in the heat distribution in addition to the divergent central peak. The positions of the bands are determined by the potential gaps. We, moreover, determine the tails of the heat distribution.


PACS

44.05.+e Analytical and numerical techniques

02.50.Cw Probability theory

02.50.Ng Distribution theory and Monte Carlo studies

05.40.Jc Brownian motion

MSC

62Exx Distribution theory (See also 60Exx)

80M25 Other numerical methods

80A20 Heat and mass transfer, heat flow

60Bxx Probability theory on algebraic and topological structures

60Exx Distribution theory (See also 62Exx, 62Hxx)

60J65 Brownian motion (See also 58J65)

Subjects

Mathematical physics

Computational physics

Statistical physics and nonlinear systems

Dates

Issue 47 (27 November 2009)

Received 3 September 2009, in final form 12 October 2009

Published 6 November 2009



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