Spin dynamics in a dissipative environment: from quantal to classical

Details Spin dynamics in a dissipative environment: from quantal to classical Spin dynamics in a dissipative environment: from quantal to classical

2005-04-30

arxiv.org/abs/quant-ph/0505002v2

Phys. Rev. Lett. 95, 190401 (2005)

Physics

Quantum Physics

4 pp., 3 figs., resubmitted to Phys. Rev. Lett. with minor changes

Scientific paper

10.1103/PhysRevLett.95.190401

We address the problem of spin dynamics in the presence of a thermal bath, by solving exactly the appropriate quantum master equations with continued-fraction methods. The crossover region between the quantum and classical domains is studied by increasing the spin value S, and the asymptote for the classical absorption spectra is eventually recovered. Along with the recognized relevance of the coupling strength, we show the critical role played by the structure of the system-environment interaction in the emergence of classical phenomenology.

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