Topological - Antitopological Fusion and the Large N CP N Model
نویسندگان
چکیده
We discuss the large N limit of the supersymmetric CP N models as an illustration of Cecotti and Vafa's tt * formalism. In this limit the 'tt * equation' becomes the long wavelength limit of the 2D Toda lattice, an equation first studied in the context of self-dual gravity. We show how simple finite temperature and large N techniques determine the relevant solution, and verify analytically that it solves the tt * equation, using Legendre transform techniques from self-dual gravity.
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