Abstract
We discuss the spectral density of the massless Dirac operator at small eigenvalues and quark masses compatible with the restrictions imposed by the low-energy theorems in QCD. The sum rule for its derivative with respect to the quark mass is found.
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From Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 71, No. 6, 2000, pp. 344–347.
Original English Text Copyright © 2000 by Gorsky.
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Gorsky, A. Low-energy theorems and the Dirac operator spectral density in QCD. Jetp Lett. 71, 239–241 (2000). https://doi.org/10.1134/1.568324
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DOI: https://doi.org/10.1134/1.568324