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arXiv · 1304.1910

Non-equilibrium dynamics of a system with Quantum Frustration

Heiner Kohler·Andreas Hackl·Stefan Kehrein
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Abstract

Using flow equations, equilibrium and non-equilibrium dynamics of a two-level system are investigated, which couples via non-commuting components to two independent oscillator baths. In equilibrium the two-level energy splitting is protected when the TLS is coupled symmetrically to both bath. A critical asymmetry angle separates the localized from the delocalized phase. On the other hand, real-time decoherence of a non-equilibrium initial state is for a generic initial state faster for a coupling to two baths than for a single bath.

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Heiner Kohler, Andreas Hackl, Stefan Kehrein. 2013-04-06. Non-equilibrium dynamics of a system with Quantum Frustration. https://doi.org/10.1103/physrevb.88.205122

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