TITLE

Computation of the nucleon properties in the chiral quark model

AUTHOR(S)
Baacke, Ju¨rgen; Sprenger, Hendrik
PUB. DATE
March 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 508 Issue 1, p53
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Up to now the quark sea contributions to the energy and various physical observables in the chiral quark model have been formulated with the summation of levels. We will present a different technique for computing various physical observables, based on using the Euclidean Green functions and their K-spin partial wave reduction. In this framework it is not necessary to discretize the continuous spectrum by introducing a finite boundary. Besides this technical advantage such an alternative computation scheme makes it possible to obtain the numerical predictions of the model in an entirely independent way. Using this formulation we perform a new self-consistent computation of the nucleon state in the Nambu-Jona-Lasinio model. We use the Pauli-Villars cutoff to define the model. Our results for the nucleon energy, the mesonic profile, and various observables essentially confirm results obtained by other groups using this regularization. Similar techniques applied to Minkowskian Green functions can be used to compute the nucleon structure functions. © 2000 American Institute of Physics.
ACCESSION #
6028921

 

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