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TT: Tiefe Temperaturen
TT 13: Transport - Quantum Coherence and Quantum Information Systems
TT 13.8: Talk
Saturday, March 5, 2005, 10:30–10:45, TU H3027
Quantum Frustration in the damped harmonic Oszillator — •Heinerich Kohler1 and Fernando Sols2 — 1Institut für theoretische Physik, Universität Heidelberg — 2Universidad Complutense Madrid
We study the dissipative properties of a harmonic oscillator subjected to two independent heat baths which couple linearly to its position and to its momentum respectively. We find that the effects of the two heat baths partially cancel each other, due to the noncommutativity of position and momentum (quantum frustration). This leads to unexpected effects as underdamped oscillations in the strong coupling regime. We compare this model with the scenario where only one baths couples linear to the position and the momentum of the central oscillator. In the latter case no quantum frustration effects occur.