Chiral Perturbation Theory and U(3)L× U(3)R Chiral Theory of Mesons
Abstract
We examine low energy limit of U(3)L× U(3)R chiral theory of mesons through integrating out fields of vector and axial-vector mesons. The effective lagrangian for pseudoscalar mesons at O(p4) has been obtained, and five low energy coupling constants Li(i=1,2,3,9,10) have been revealed. They are in good agreement with the results of CHPT's at μ m.
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