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DY: Fachverband Dynamik und Statistische Physik
DY 8: Statistical Physics far from Thermal Equilibrium
DY 8.9: Vortrag
Montag, 20. März 2017, 17:15–17:30, ZEU 118
Jarzynski equality beyond thermal Gibbs states — •Daniel Schmidtke and Jochen Gemmer — Fachbereich Physik, Universität Osnabrück, Germany
The Jarzynski equality allows to derive equilibrium thermodynamical quantities just from irreversible (non-equilibrium) trajectories. It holds in both, the classical and the quantum context. Though settings and approaches indeed differ greatly, they all have in common that the initial state is some thermal Gibbs state. Up to now, no conclusive theory when considering other initial states is presented. Therefore, we numerically investigate work distributions in driven isolated systems, starting off from single energy eigenstates of the initial Hamiltonian. A finite size scaling might allow for statements on whether the Jarzynski equality must require Gibbs states, or other initial states at least will fulfill this relation to good accuracy. Moreover, we point out the close connection between fulfilling the Jarzynski equality and eigenstate thermalization hypothesis.