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https://hdl.handle.net/2142/31249
Description
Title
Theory of High Temperature Spin Dynamics
Author(s)
Fine, Boris Veniaminovich
Issue Date
2000
Doctoral Committee Chair(s)
Leggett, Anthony J.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
spin dynamics
nuclear magnetic resonace
inelastic neutron scattering
interacting spins
Language
en
Abstract
The problems of high-temperature spin dynamics have practical applications in the fields
of nuclear magnetic resonance and inelastic neutron scattering. At the same time. those
problems represent an important limit for the study of strongly interacting many-body systerns.
In this thesis, we consider systems of interacting spins-both classical and quantum-and
develop the quantitative theory of the time-dependent correlation functions characterizing
the high temperature spin dynamics.
The original results presented in this thesis include: (I) model-independent analysis of the
long-time behavior of the correlation functions of interest, which reveals that that behavior
has a universal functional form; (II) model for approximate calculations of the correlation
functions of interest; (III) extensive simulations of the classical spin systems performed in
order to test the long-time analysis and the approximation technique.
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