Rostock 2019 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 47: Quantum Effects (QED) II
Q 47.3: Talk
Thursday, March 14, 2019, 11:00–11:15, S Gr. HS Maschb.
Dynamical nonequilibrium dispersion forces at finite temperatures — •Marty Oelschläger1, Francesco Intravaia2, and Kurt Busch1,2 — 1Max-Born-Institut, 12489 Berlin, Germany — 2Humboldt-Universität zu Berlin, Institut für Physik, AG Theoretische Optik & Photonik, 12489 Berlin, Germany
If we leave the realm of closed system dynamics in equilibrium and step into the wide area of nonequilibrium physics of open systems, a vast number of new phenomena can be theoretically investigated and often experimentally observed. One interesting effect is a drag force acting on a particle when it is set in relative motion with respect to a surface. This phenomenon, usually called Casimir or quantum friction, is at the center of various discussions due to its peculiar nature and its connection to nonequilibrium physics. Current theoretical predictions are often restricted either to many approximations or to simplifying assumptions as, for example, a system at zero temperature. In our work we focus on the particle-surface interactions, where the particle can either be a non-dissipative atom or even a nanoparticle with an internal bath. We generalize the current theoretical framework describing quantum friction by considering finite temperatures, rotational degrees of freedom and/or a more realistic modeling of the nanoparticle's inner structure. With these extensions we aim towards an experimental realizable scheme in order to make quantum friction measurable.