Semi-Classical Dynamics in Quantum Spin Systems
Semi-Classical Dynamics in Quantum Spin Systems
复制标题
量子自旋系统中的半经典动力学
DOI:
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发表时间:
2007
期刊:
影响因子:
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通讯作者:
E. Lenzmann
中科院分区:
文献类型:
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作者:
J. Fröhlich;Antti Knowles;E. Lenzmann
We consider two limiting regimes, the large-spin and the mean-field limit, for the dynamical evolution of quantum spin systems. We prove that, in these limits, the time evolution of a class of quantum spin systems is determined by a corresponding Hamiltonian dynamics of classical spins. This result can be viewed as a Egorov-type theorem. We extend our results to the thermodynamic limit of lattice spin systems and continuum domains of infinite size, and we study the time evolution of coherent spin states in these limiting regimes.