Approach to equilibrium of coupled, harmonically bound oscillator systems

Harry S. Robertson, Manuel A. Huerta

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


A finite segment of an infinite, harmonically bound, weakly coupled oscillator chain evolves to a final state of equilibrium as a consequence of the statistical influence of the heat bath-the rest of the chain-on the system, via the equations of motion. Information theory eliminates the need for coarse graining or ergodicity. The entropy, defined in terms of the reduced Liouville function of the system variables, is shown to evolve to the equilibrium value, and equipartition follows directly.

Original languageEnglish (US)
Pages (from-to)825-827
Number of pages3
JournalPhysical Review Letters
Issue number15
StatePublished - Dec 1 1969

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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