Regensburg 2019 – wissenschaftliches Programm
DY 9.8: Vortrag
Montag, 1. April 2019, 17:30–17:45, H19
Environment induced pre-thermalization in the Mott-Hubbard model — •Friedemann Queisser2,3, Ralf Schützhold1,2,3, Nikodem Szpak1, and Patrick Navez2 — 1Fakultät für Physik, Universität Duisburg-Essen, Lotharstraße 1, Duisburg 47057, Germany — 2Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany — 3Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden, Germany
Using a hierarchy of correlations, we discuss the strongly interacting Fermi-Hubbard model in the Mott
insulating regime coupled to a Markovian environment [1,2].
The environment is chosen such that the particle number is
constantly monitored at each lattice site.
As expected, the environment induces a decay rate of γ the quasi-particles frequencies
and tends to diminish the correlations between lattice sites.
Surprisingly, the environment does also steer the
state of the system on intermediate time scales
O(1/γ) to a pre-thermalized state very similar to
a quantum quench.
The full thermalization and the approach to an infinite temperature state
occurs via local on-site heating and takes much longer.
 P. Navez and R. Schützhold, Phys. Rev. A 82, 063603
 F. Queisser and R. Schützhold, arXiv:1808.09906