Quantum coherent operators: A generalization of coherent states

Elliott H. Lieb, Jan Philip Solovej

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


We introduce a technique to compare different, but related, quantum systems, thereby generalizing the way that coherent states are used to compare quantum systems to classical systems in semiclassical analysis. We then use this technique to estimate the dependence of the free energy of the quantum Heisenberg model on the spin value, and to estimate the relation between the ferromagnetic and antiferromagnetic free energies.

Original languageEnglish (US)
Pages (from-to)145-154
Number of pages10
JournalLetters in Mathematical Physics
Issue number2
StatePublished - Jun 1991

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Mathematical Physics


  • AMS subject classifications (1991): 81R30, 81S30


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