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Persistent URL http://purl.org/net/epubs/work/25521
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Record Id 25521
Title The theory of the time dependent properties of classical Heisenberg spin chains at infinite temperature
Abstract A coupled-mode theory for the spin response function is used to calculate time-dependent properties of the classical spin chain at infinite temperature. The behaviour of the spin autocorrelation function is consistent with computer simulation data, in that the exponent of the time tail decreases on moving from intermediate to asymptotic time regions. Results for the spin response function and memory function in the two time regions are obtained by a combination of asymptotic analysis and numerical studies. For a large wavevector, near the zone boundary, the spin response function displays a very pronounced oscillatory time dependence. However, there is next to no structure in the corresponding spectral function, in accord with simulation data.
Organisation ISIS , ISIS-THEORY , SERC
Keywords Physics
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Language English (EN)
Type Details URI(s) Local file(s) Year
Report RAL Technical Reports RAL-93-068. 1993. RAL-TR-1993-068.pdf 1993