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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/25521
Record Status
Checked
Record Id
25521
Title
The theory of the time dependent properties of classical Heisenberg spin chains at infinite temperature
Contributors
Stephen W Lovesey (SERC RutherfordAppleton Lab.)
,
Ewald Balcar (Atominstitut of the Austrian Universities)
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
Funding Information
Related Research Object(s):
Licence Information:
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
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