Dynamics of N-spins Quantum Ferromagnet with Uniform Exchange: Exact Solution

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dc.creatorChertkov, M.
dc.creatorKolokolov, I.
dc.date1994-04-28
dc.date.accessioned2026-07-07T03:07:14Z
dc.date.available2026-07-07T03:07:14Z
dc.descriptionThe transverse spin autocorrelation function at an arbitrary temperature are calculated rigorously for the system of $N$ uniformly exchanged quantum spins. At large $N$ the correlator in the para-phase is found to have a Gaussian bump at small times and a non vanishing tail at large times. A possible application of those exact results as forming a starting dynamical mean-field approximation for long-range quantum magnets and an accompanied physical picture are discussed.
dc.description6 pages, RevTex 3.0 followed by 2 PostScript figures, Preprint IFUM-467/FT
dc.identifierhttps://arxiv.org/abs/cond-mat/9404093
dc.identifierhttp://arxiv.org/abs/cond-mat/9404093
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/27099
dc.subjectCondensed Matter
dc.titleDynamics of N-spins Quantum Ferromagnet with Uniform Exchange: Exact Solution
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