Spreading in integrable and non-integrable many-body systems

Johannes Freese, Boris Gutkin and Thomas Guhr

Physica A: Statistical Mechanics and its Applications, 2016, vol. 461, issue C, 683-693

Abstract: We consider a finite, closed and selfbound many-body system in which a collective degree of freedom is excited. The redistribution of energy and momentum into a finite number of the non-collective degrees of freedom is referred to as spreading as opposed to damping in open systems. Spreading closely relates to thermalization, but while thermalization requires non-integrability, spreading can also present in integrable systems. We identify subtle features which determine the onset of spreading in an integrable model and compare the result with a non-integrable case.

Keywords: Many-body systems; Collective modes; Spreading; Integrability (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:461:y:2016:i:c:p:683-693

DOI: 10.1016/j.physa.2016.06.008

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