Equilibrium dynamics of a paramagnetic cluster

Michael Chertkov, Igor Kolokolov

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


The transverse autocorrelation function at an arbitrary temperature is calculated rigorously for a system with an arbitrary number of quantum spins, each of which is coupled to all the other spins with equal exchange. It is shown that the cluster approximation, formed by a model for a real magnet, explains short- and intermediate-time (up to the time to reach the spin-diffusion regime) experimental measurements in the paramagnetic phase.

Original languageEnglish
Pages (from-to)3974-3977
Number of pages4
JournalPhysical Review B
Issue number6
Publication statusPublished - 1995
Externally publishedYes


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