Nucleon structure and nuclear force in the context of path-integral methods and the Nambu-Jona-Lasinio model

Details Nucleon structure and nuclear force in the context of path-integral methods and the Nambu-Jona-Lasinio model Nucleon structure and nuclear force in the context of path-integral methods and the Nambu-Jona-Lasinio model

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apru10011a&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

Nucleon structure and the origin and nature of the nuclear force are investigated in the context of a QCD-based effective field theory and the path-integral methods of bosonization and hadronization. We start from a microscopic theory of quark and diquarks where the gluons have been integrated out. We use the chiral Nambu-Jona-Lasinio model to describe the quark dynamics and postulate that the baryon can be conceived as a quark-diquark correlation. The bosonization and hadronization methods are then used to rewrite the problem in terms of the physical meson and baryon degrees of freedom. We arrive at an effective chiral meson-baryon lagrangian in terms of derivative expansions of the resulting quark/diquark determinants. Nucleon structure and physical properties such as mass, coupling constants, electromagnetic radii, anomalous magnetic moments, and form factors are derived using a theory of at most two free parameters.

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