Non-equilibrium dynamics of a system with Quantum Frustration
arXiv:1304.1910 · doi:10.1103/PhysRevB.88.205122
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.
22 pages, 9 figures
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Cited by in corpus (7)
- Discontinuities in driven spin-boson systems due to coherent destruction of tunneling: breakdown of the Floquet-Gibbs distribution
- Quantum phase transition with dissipative frustration
- Quasi-adiabatic path integral approach for quantum systems under the influence of multiple non-commuting fluctuations
- Solvable models of two-level systems coupled to itinerant electrons: Robust non-Fermi liquid and quantum critical pairing
- Dissipation-induced enhancement and squeezing of quantum fluctuations
- Enhanced entanglement in multi-bath spin-boson models
- Exponential speedup of incoherent tunneling via dissipation