Temperature crossover of decoherence rates in chaotic and regular bath dynamics
arXiv:1203.4629 · doi:10.1103/PhysRevE.85.036218
Abstract
The effect of chaotic bath dynamics on the decoherence of a quantum system is examined for the vibrational degrees of freedom of a diatomic molecule in a realistic, constant temperature collisional bath. As an example, the specific case of I in liquid xenon is examined as a function of temperature, and the results compared with an integrable xenon bath. A crossover in behavior is found: the integrable bath induces more decoherence at low bath temperatures than does the chaotic bath, whereas the opposite is the case at the higher bath temperatures. These results, verifying a conjecture due to Wilkie, shed light on the differing views of the effect of chaotic dynamics on system decoherence.
7 pages, 3 figures
References in corpus (9)
- Quantum many-body theory of qubit decoherence in a finite-size spin bath
- Decoherence by a spin thermal bath: Role of the spin-spin interactions and initial state of the bath
- Evolution of a quantum spin system to its ground state: Role of entanglement and interaction symmetry
- Overlapping resonances in the control of intramolecular vibrational redistribution
- Different types of integrability and their relation to decoherence in central spin models
- Decoherence induced by an interacting spin environment in the transition from integrability to chaos
- Probing internal bath dynamics by a Rabi oscillator-based detector
- Kraus decomposition for chaotic environments
- Kraus decomposition for chaotic environments including time-dependent subsystem Hamiltonians