29,692 research outputs found
Bound particle coupled to two thermostats
We consider a harmonically bound Brownian particle coupled to two distinct
heat reservoirs at different temperatures. We show that the presence of a
harmonic trap does not change the large deviation function from the case of a
free Brownian particle discussed by Derrida and Brunet and Visco. Likewise, the
Gallavotti-Cohen fluctuation theorem related to the entropy production at the
heat sources remains in force. We support the analytical results with numerical
simulations
Heat fluctuations and fluctuation theorems in the case of multiple reservoirs
We consider heat fluctuations and fluctuation theorems for systems driven by
multiple reservoirs. We establish a fundamental symmetry obeyed by the joint
probability distribution for the heat transfers and system coordinates. The
symmetry leads to a generalisation of the asymptotic fluctuation theorem for
large deviations at large times. As a result the presence of multiple
reservoirs influence the tails in the heat distribution. The symmetry,
moreover, allows for a simple derivation of a recent exact fluctuation theorem
valid at all times. Including a time dependent work protocol we also present a
derivation of the integral fluctuation theorem.Comment: 27 pages, 1 figure, new extended version, to appear in J. Stat. Mech,
(2014
The Story of the Puerto Rican-Chicano Committee
The concept or idea for The Puerto Rican-Chicano Committee (PRCC) came from UB student Alberto O. Cappas, who also was the original founder of PODER, at the time known as the Puerto Rican Organization for Dignity, Elevation, and Responsibility
- …