Collective excitations and retarded interactions
- 1 March 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 31 (5), 2862-2866
- https://doi.org/10.1103/physrevb.31.2862
Abstract
We study the dynamics of many-body systems with retarded interactions and show how their non-Markovian character can lead to nonergodic behavior. This nonergodicity is characterized by the appearance of long periods or chaotic wanderings in phase space. We construct the phase diagrams for Ising-type systems with delayed interactions, and show the emergence of non-Gibbsian measures as a function of both interaction strengths and delays.Keywords
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