Dresden 2017 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 8: Statistical Physics far from Thermal Equilibrium

DY 8.9: Talk

Monday, March 20, 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.