Phase structure of unitary matrix models

Mandal, Gautam (1990) Phase structure of unitary matrix models Modern Physics Letters A, 05 (14). pp. 1147-1158. ISSN 0217-7323

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We investigate unitary one-matrix models described by polynomial potentials. We find many different phases of these models at strong, weak and intermediate couplings characterized by multiple gaps in the spectral density. The one-gap phase is studied in detail and it shows multi-critical behavior with γ = −1/m. The multiple-phase structure may have implications for the phases of string theory.

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