Nonequilibrium fluctuations in a resistor

Details Nonequilibrium fluctuations in a resistor Nonequilibrium fluctuations in a resistor

2004-07-21

arxiv.org/abs/cond-mat/0407574v2

Physical Review E 71 (2005) 060101 (R)

Physics

Condensed Matter

Statistical Mechanics

Juillet 2004

Scientific paper

10.1103/PhysRevE.71.060101

In small systems where relevant energies are comparable to thermal agitation, fluctuations are of the order of average values. In systems in thermodynamical equilibrium, the variance of these fluctuations can be related to the dissipation constant in the system, exploiting the Fluctuation-Dissipation Theorem (FDT). In non-equilibrium steady systems, Fluctuations Theorems (FT) additionally describe symmetry properties of the probability density functions (PDFs) of the fluctuations of injected and dissipated energies. We experimentally probe a model system: an electrical dipole driven out of equilibrium by a small constant current $I$, and show that FT are experimentally accessible and valid. Furthermore, we stress that FT can be used to measure the dissipated power $\bar{\cal P}=RI^2$ in the system by just studying the PDFs symmetries.

Affiliated with

Also associated with

No associations

Rating

Nonequilibrium fluctuations in a resistor does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Nonequilibrium fluctuations in a resistor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonequilibrium fluctuations in a resistor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-634