Improved effective action for light quarks beyond the chiral limit

  • M. Musakhanov
Theoretical physics


We propose an improvement of the Diakonov–Petrov effective action on the basis of the Lee–Bardeen results for the quark determinant in the instanton field. This improved effective action provides a proper account of the current quark masses, which is particularly important for strange quarks. This action is successfully tested by calculations of the quark condensate, the masses of the pseudoscalar meson octet and axial-anomaly low-energy theorems.


Ective Action Light Quark Strange Quark Pseudoscalar Meson Chiral Limit 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • M. Musakhanov
    • 1
  1. 1.Theoretical Physics DepartmentTashkent State UniversityTashkentUzbekistan

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