A Nonlocal Model of Chiral Dynamics
Sep, 19896 pages
Published in:
- Phys.Lett.B 232 (1989) 351-356
- Published: 1989
Report number:
- UTPT-89-23
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Abstract: (Elsevier)
We consider a nonlocal generalization of the nonlinear σ model. Our chirally symmetric model couples quarks with self-energy ∑( p 0 to Goldstone bosons (GBs). By integrating out the quarks we obtain a chiral lagrangian, the parameters of which are finite integrals of ∑( p ). We find that chiral symmetry is not sufficient to derive the well-known Pagels-Stokar formula for the GB decay constant. We reproduce the Wess-Zumino term and we illustrate the dependence of other four derivative coefficients on ∑( p ).- sigma model: nonlinear
- symmetry: SU(N)
- symmetry: chiral
- Goldstone particle
- fermion: propagator
- perturbation theory: higher-order
- field theory: nonlocal
- Wess-Zumino term
- numerical calculations
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