Unitary Matrix Models with a topological term and discrete time Toda equation
نویسنده
چکیده
We study the full unitary matrix models. Introducing a new term l logU , l plays the role of the discrete time. On the other hand, the full unitary matrix model contains a topological term. In the continuous limit it gives rise to a phase transition at θ = π. The ground state is characterize by the discrete time l. The discrete time l plays like the instanton number.
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تاریخ انتشار 2008