title: Extension of the fluctuation theorem.
abstract: Heat fluctuations are studied in a dissipative system with both deterministic and stochastic components for a simple model: a Brownian particle dragged through water by a moving potential. An extension of the stationary state fluctuation theorem is derived. For infinite time, this reduces to the conventional fluctuation theorem only for small fluctuations; for large fluctuations, it gives a much larger ratio of the probabilities of the particle to absorb rather than supply heat. This persists for finite times and should be observable in experiments similar to a recent one carried out by Wang et al.
authors.affiliation: The Rockefeller University, 1230 York Avenue, New York, New York 10021, USA.
authors.forename: R
authors.initials: R
authors.lastname: van Zon
authors.forename: E G D
authors.initials: EG
authors.lastname: Cohen