On the origin of current quark mass within nonperturbative QCD

Details On the origin of current quark mass within nonperturbative QCD On the origin of current quark mass within nonperturbative QCD

2000-06-26

arxiv.org/abs/hep-ph/0006297v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages

Scientific paper

We develop the theory of fermion induced phononlike excitations of the instanton liquid. It suggests a mechanism of current quark mass generation which is easily understandable by calculating the corresponding functional integral in the tadpole approximation. We systematically study the quark condensate excitations influenced by the phononlike modes and rederive the relation Gell-Mann-Oakes-Renner with realistic pion mass. The picture of $\sigma$-meson as being mixed with the soft scalar glueball-like excitation is discussed.

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