Effective quark Lagrangian in the instanton-gas model

Abstract

A straightforward derivation of the effective quark Lagrangian is presented for the topologically neutral chiral broken phase of the dilute instanton gas. The resulting quark Lagrangian is a nonlocal NJL-type and contains 4q, 6q,... vertices for any number of flavours. Correspondence of this result with previously known in literature is discussed in detail.

15 pages, LaTeX 2.09

References in corpus (1)

• Effective Quark Lagrangian in the Instanton Vacuum with Nonzero Modes Included

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