Reduced unitary matrix models and the hierarchy of τ-functions

Mark J. Bowick, Aleksey Morozov, Daniel Shevitz

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


We study reductions of unitary one-matrix models. The unitary model admits an especially rich class of reductions of which the widely known symmetric model is only one. The partition function of a certain class of reduced models is shown to be a product of distinct Toda chain τ-functions. Virasoro constraints are also derived for the case of unitary models. It is claimed, in analogy with the reduced hermitian model, that in the continuous limit the Virasoro constraints must be imposed on a fractional power of the original partition function.

Original languageEnglish (US)
Pages (from-to)496-530
Number of pages35
JournalNuclear Physics, Section B
Issue number2-3
StatePublished - May 6 1991

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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