Effective Lagrangians and Chiral Random Matrix Theory

Abstract

Recently, sum rules were derived for the inverse eigenvalues of the Dirac operator. They were obtained in two different ways: i) starting from the low-energy effective Lagrangian and ii) starting from a random matrix theory with the symmetries of the Dirac operator. This suggests that the effective theory can be obtained directly from the random matrix theory. Previously, this was shown for three or more colors with fundamental fermions. In this paper we construct the effective theory from a random matrix theory for two colors in the fundamental representation and for an arbitrary number of colors in the adjoint representation. We construct a fermionic partition function for Majorana fermions in Euclidean space time. Their reality condition is formulated in terms of complex conjugation of the second kind.

27 pages

References in corpus (3)

• Spectral sum rules and finite volume partition function in gauge theories with real and pseudoreal fermions
• Instantons and fermion condensate in adjoint QCD_2
• Introductory Lectures on Low Energy Supersymmetry

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