Dresden 2006 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 46: Poster

DY 46.53: Poster

Donnerstag, 30. März 2006, 16:00–18:00, P1

Model studies on quantum fluctuation theorems — •Jens Teifel and Günter Mahler — Universität Stuttgart, Institut für Theoretische Physik 1, Pfaffenwaldring 57//IV, 70550 Stuttgart, Germany

If an external force acts on a thermodynamic system on a finite time scale, it may be driven out of equilibrium. The Jarzynski relation, a classical fluctuation theorem, connects the work performed on a system and the difference of the free energy of the initial and final state respectively. A quantum analogue has been established by S. Mukamel [1]. Here we study simple models of quantum thermodynamic systems; their unitary evolution during the externally driven process as well as the variance and distribution of work is examined.

[1] Phys. Rev. Lett. 90, 170604 (2003)