Berlin 2012 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

DY: Fachverband Dynamik und Statistische Physik

DY 22: Posters I

DY 22.43: Poster

Mittwoch, 28. März 2012, 17:00–19:00, Poster A

Fluctuation of work and heat of the isothermal expansion of an ideal gas — •Johannes Hoppenau and Andreas Engel — Institut für Physik, Carl von Ossietzky Universität, 26111 Oldenburg

Recently stochastic thermodynamics gave rise to unexpected results, such as the Jarzynski equation. The Jarzynski equation relates the average exponential work done under an non-equilibrium transformation to the difference of the free energy between the end and start state. As in illustrative example we present a model for the isothermal expansion and compression of an ideal gas and investigate the probability of the work done and the heat transferred during the transformation. Lua and Grosberg did an similar analysis for an adiabatic expansion and compression. Both results together may be used to investigate the efficiency of an Carnot cycle far from the quasi static limit.