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Berlin 2005 – scientific programme

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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 Sols21Institut 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.

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