Uniqueness of the translationally invariant ground state in quantum spin systems

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We introduce a class of quantum spin systems on ℤd. We show that the translationally invariant ground state is unique for this system if it is in a strong external field.

Original languageEnglish
Pages (from-to)453-467
Number of pages15
JournalCommunications in Mathematical Physics
Issue number3
Publication statusPublished - Jan 1 1990
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Mathematical Physics

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