RELATING THE PION DECAY CONSTANT TO THE CHIRAL RESTORATION TEMPERATURE
نویسندگان
چکیده
منابع مشابه
Relating the pion decay constant to the chiral restoration temperature
Relating the pion decay constant to the chiral restoration temperature. Abstract We review the relationship between the pion decay constant f π , the chiral symmetry restoration temperature T c and the phenomenology of low energy chiral symmetry breaking in view of the recent confirmation of the existence of a sigma meson with a mass of 600-700 MeV.
متن کاملPion mass and decay constant
Independent of assumptions about the form of the quark-antiquark scattering kernel we derive the explicit relation between the pion Bethe-Salpeter amplitude, Γπ, and the quark propagator in the chiral limit; Γπ necessarily involves a non-negligible γ5γ · P term (P is the pion four-momentum). We also obtain exact expressions for the pion decay constant, fπ, and mass, both of which depend on Γπ; ...
متن کاملAn analytic analysis of the pion decay constant in three-flavoured chiral perturbation theory
A representation of the two-loop contribution to the pion decay constant in SU(3) chiral perturbation theory is presented. The result is analytic up to the contribution of the three (different) mass sunset integrals, for which an expansion in their external momentum has been taken. We also give an analytic expression for the two-loop contribution to the pion mass based on a renormalized represe...
متن کاملThe Pion Velocity at Chiral Restoration and the Vector Manifestation
We study the effects of Lorentz non-invariance on the physical pion velocity at the critical temperature Tc in an effective theory of hidden local symmetry (HLS) with the “vector manifestation” fixed point. We match at a “matching scale” ΛM the axial-vector current correlator in the HLS with the one in the operator product expansion for QCD, and present the matching condition to determine the b...
متن کاملPion decay constant at finite temperature in the nonlinear sigma model.
We calculate the pion decay constant near the critical temperature of the O(N) nonlinear sigma model in the large N limit. Making use of the known low temperature behavior, we construct a Padé approximant to obtain the behavior of fπ(T ) at all temperatures.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Modern Physics A
سال: 1995
ISSN: 0217-751X,1793-656X
DOI: 10.1142/s0217751x95000553