Low energy theorems and the Dirac operator spectral density in QCD

Abstract

We discuss the behaviour of the spectral density of the massless Dirac operator at the small eigenvalues and quark masses compatible with the restrictions imposed by the low energy theorems in QCD. Sum rule for its derivative over the quark mass is found.

arXiv commentLatex, 6 pages, minor changes and reference added

Cited by in corpus (1)

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