Study on energy diffusive phenomenon in quantum spin chains

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Abstract

Energy transport in quantum spin chains is considered. We first discuss the Heisenberg chain with weak perturbation. In the region where the field theoretical treatment is valid, an anomalous transport still exists in the presence of the Umklapp term. We next consider the large perturbation where trivial symmetries does not exist. In this case, the Green-Kubo formula converges, and the normal thermal conduction appears.

Original languageEnglish
Pages (from-to)66-68
Number of pages3
JournalJournal of the Physical Society of Japan
Volume72
Issue numberSUPPL.C
DOIs
Publication statusPublished - 2003 Jan 1

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Keywords

  • Quantum spin chains
  • Thermal conduction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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