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Dirac operator spectral density and low energy sum rules

K. Zyablyuk1

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The spectral density of euclidean Dirac operator is investigated in partially quenched QCD with arbitrary quark masses. A representation of scalar and pseudoscalar correlators in terms of the spectral density is discussed. The spectral density, obtained from the partially quenched chiral perturbation theory is shown to be compatible with low energy sum rules, obtained earlier.


Keywords

Chiral Lagrangians

QCD

Sum Rules

 

E-print Number: hep-ph/9911300

Cited: by |

Refers: to

PACS

11.30.Rd Chiral symmetries

12.38.-t Quantum chromodynamics

11.10.Ef Lagrangian and Hamiltonian approach

Subjects

Particle physics and field theory

Dates

Issue 06 ( 1 June 2000)

Received 16 March 2000, accepted for publication 16 June 2000

Published 11 July 2000



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