Dresden 2017 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 8: Statistical Physics far from Thermal Equilibrium
DY 8.8: Talk
Monday, March 20, 2017, 17:00–17:15, ZEU 118
Driven quantum baths — •Joscha Reichert1,2, Peter Nalbach3, Hermann Grabert4,5, and Michael Thorwart1,2 — 1I. Institut für Theoretische Physik, Universität Hamburg, Jungiusstraße 9, 20355 Hamburg, Germany — 2The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany — 3Westfälische Hochschule, Münsterstraße 265, 46397 Bocholt, Germany — 4Freiburg Institute for Advanced Studies (FRIAS), Universität Freiburg, Albertstr. 19, 79104 Freiburg, Germany — 5Physikalisches Institut, Universität Freiburg, Hermann-Herder-Straße 3, 79104 Freiburg, Germany
The established theoretical framework of quantum dissipation usually neglects the interaction between a probing pulse and the surrounding environment of a central-quantum system to preserve equilibrium conditions. The introduction of a dipolar coupling to the environmental modes gives rise to an additional force-component on the system in question which can be quantified using a simple dielectric solvation model. An investigation for a THz-probed polarizable molecule in water and a quantum-dot metal-nanoparticle setup leads to enhancement and profound changes in the linear response of both systems [1]. A more detailed investigation of the spin-boson model within a master-equation framework and pulse-shaped bath-driving reveals the additional force to capture the non-equilibrium memory effects of the bath and depends on its underlying spectral characteristics [2].
[1] Phys. Chem. Lett. 7, 2015 (2016)
[2] Phys. Rev. A 94, 032127 (2016)