arXiv subjects

D. S. Kuzmenko

Publications and source records attributed to D. S. Kuzmenko.

20 records · Page 2Linked to original sources

arXiv1997

Effective Quark Lagrangian in the Instanton Vacuum with Nonzero Modes Included

A new approach to effective theory of quarks in the instanton vacuum is presented. Exact equations for the quark propagator and Lagrangian are derived which contain contributions of all quark modes with known coefficients. The resulting effective Lagrangian differs from the standard one and resembles that of the Nambu-Jona-Lasinio model.

hep-ph↗

arXiv1996

Breakdown of Zero--Mode Approximation in the Instanton Vacuum

A new approach to effective theory of quarks in the instanton vacuum is presented. Exact equations for the quark propagator and Lagrangian are derived which contain contributions of all quark modes with known coefficients. The resulting effective Lagrangian resembles that of the Nambu--Jona--Lasinio model. The commonly used zero--mode approximation is shown to be invalid in the chiral limit.

hep-ph↗