Spin dynamics of quantum and classical Heisenberg dimers

Details Spin dynamics of quantum and classical Heisenberg dimers Spin dynamics of quantum and classical Heisenberg dimers

1999-04-13

arxiv.org/abs/cond-mat/9904170v1

Physica A 272 (1999) 153-161

Physics

Condensed Matter

Statistical Mechanics

10 pages, 4 postscript figures, uses 'epsfig.sty'. Submitted to Physica A. More information available at http://www.physik.u

Scientific paper

10.1016/S0378-4371(99)00239-3

Analytical solutions for the time-dependent autocorrelation function of the classical and quantum mechanical spin dimer with arbitrary spin are presented and compared. For large spin quantum numbers or high temperature the classical and the quantum dimer become more and more similar, yet with the major difference that the quantum autocorrelation function is periodic in time whereas the classical is not.

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