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TT: Fachverband Tiefe Temperaturen

TT 7: Fluctuations, Noise, Magnetotransport, and Related Topics

TT 7.10: Vortrag

Montag, 5. September 2022, 17:30–17:45, H23

Hierarchical equations of motions approach to the study of thermodynamic uncertainty relations — Salvatore Gatto and •Michael Thoss — Institute of Physics, Albert-Ludwigs-Universität Freiburg

Thermodynamic uncertainty relations (TUR) are cost-precision trade-off relations in transport systems, relating the fluctuations in the heat and particle currents to the reversibility of the operation regime. While some violations have been reported for the TUR in classical systems, it has been found out that the geometry of quantum non-equilibrium steady-states alone directly implies the existence of a general quantum TUR. In this contribution, we investigate the relationship between quantum effects and current fluctuations in quantum systems. The hierarchical equation of motion approach is employed, which allows a numerically exact simulation of nonequilibrium transport in general open quantum systems involving multiple bosonic and fermionic environments.