Statistical properties of the energy exchanged between two heat baths coupled by thermal fluctuations

Abstract : We study both experimentally and theoretically the statistical properties of the energy exchanged between two electrical conductors, kept at different temperature by two different heat reservoirs, and coupled by the electric thermal noise. Such a system is ruled by the same equations as two Brownian particles kept at different temperatures and coupled by an elastic force. We measure the heat flowing between the two reservoirs, the thermodynamic work done by one part of the system on the other, and we show that these quantities exhibit a long time fluctuation theorem. Furthermore, we evaluate the fluctuating entropy, which satisfies a conservation law. These experimental results are fully justified by the theoretically analysis. Our results give more insight into the energy transfer in the famous Feymann ratchet widely studied theoretically but never in an experiment.
Complete list of metadatas

Cited literature [25 references]  Display  Hide  Download

https://hal-ens-lyon.archives-ouvertes.fr/ensl-00905209
Contributor : Sergio Ciliberto <>
Submitted on : Sunday, November 17, 2013 - 5:59:59 PM
Last modification on : Thursday, October 11, 2018 - 6:44:01 PM
Long-term archiving on : Tuesday, February 18, 2014 - 4:35:02 AM

Files

long_paper_7.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : ensl-00905209, version 1
  • ARXIV : 1311.4189

Collections

Citation

Sergio Ciliberto, Alberto Imparato, Antoine Naert, Marius Tanase. Statistical properties of the energy exchanged between two heat baths coupled by thermal fluctuations. JSTAT, 2013, P12014, pp.20. ⟨ensl-00905209⟩

Share

Metrics

Record views

276

Files downloads

267