Abstract
With the help of an approach based on an analytic study of the partition function and related observable expectation values, we address the problem of the thermal stability of nonlinear structures. We develop an useful analogy with magnetic systems, present explicit calculations for a simple case, and address the existing debate in the literature concerning whether thermal interaction aids or hampers the existence of selftrapped states. An unambiguous demonstration of selftrapping being aided in one regime but hampered in another emerges from our analysis.
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Kenkre, V.M., Cruzeiro-Hansson, L. Thermal stability of nonlinear structures: A Gibbs analysis of the semiclassical system. Z. Physik B - Condensed Matter 95, 379–383 (1994). https://doi.org/10.1007/BF01343966
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DOI: https://doi.org/10.1007/BF01343966