Details

Autor(en) / Beteiligte

• Gomez-Solano, J R
• Petrosyan, A
• Ciliberto, S

Titel

Heat fluctuations in a nonequilibrium bath

Ist Teil von

• Physical review letters, 2011-05, Vol.106 (20), p.200602-200602, Article 200602

Ort / Verlag

United States

Erscheinungsjahr

2011

Quelle

PROLA

Beschreibungen/Notizen

• We measure the energy fluctuations of a Brownian particle confined by an optical trap in an aging gelatin after a very fast quench (less than 1 ms). The strong nonequilibrium fluctuations due to the assemblage of the gel are interpreted, within the framework of fluctuation theorem, as a heat flux from the particle towards the bath. We derive an analytical expression of the heat probability distribution, which fits the experimental data and satisfies a fluctuation relation similar to that of a system in contact with two baths at different temperatures.