Inequalities for Ising models and field theories which obey the Lee-Yang Theorem

Charles M. Newman

Research output: Contribution to journalArticlepeer-review


A series of inequalities for partition, correlation, and Ursell functions are derived as consequences of the Lee-Yang Theorem. In particular, the n-point Schwinger functions of even φ4 models are bounded in terms of the 2-point function as strongly as is the case for Gaussian fields; this strengthens recent results of Glimm and Jaffe and shows that renormalizability of the 2-point function by fourth degree counter-terms implies existence of a φ4 field theory with a moment generating function which is entire of exponential order at most two. It is also noted that if any (even) truncated Schwinger function vanishes identically, the resulting field theory is a generalized free field.

Original languageEnglish (US)
Pages (from-to)1-9
Number of pages9
JournalCommunications In Mathematical Physics
Issue number1
StatePublished - Feb 1975

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics


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