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The linear meson model and chiral perturbation theory

  • D.-U. Jungnickel
  • C. Wetterich
Theoretical physics

Abstract.

We compare the linear meson model and chiral perturbation theory in next to leading order in the quark mass expansion. In particular, we compute the couplings \(L_4\)\(L_8\) of chiral perturbation theory as functions of the parameters of the linear model. They are induced by the exchange of \(0^{++}\) scalar mesons. We use a phenomenological analysis of the effective vertices of the linear model in terms of pseudoscalar meson masses and decay constants. Our results for the \(L_i\) agree with previous phenomenological estimates.

Keywords

Linear Model Perturbation Theory Quark Mass Decay Constant Chiral Perturbation Theory 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • D.-U. Jungnickel
    • 1
  • C. Wetterich
    • 1
  1. 1. Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, D-69120 Heidelberg, Germany (e-mail:D.Jungnickel@thphys.uni-heidelberg.de, C.Wetterich@thphys.uni-heidelberg.de) DE

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