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Large-Npion scattering at finite temperature: Thef0(500)and chiral restoration
2016
Physical Review D
We consider the O(N+1)/O(N) Non-Linear Sigma Model for large N as an effective theory for low-energy QCD at finite temperature T, in the chiral limit. At T=0 this formulation provides a good description of scattering data in the scalar channel and generates dynamically the f_0(500) pole, the pole position lying within experimental determinations. Previous T=0 results with this model are updated using newer analysis of pion scattering data. We calculate the pion scattering amplitude at finite T
doi:10.1103/physrevd.93.036001
fatcat:tlmzecpif5dx7fmrmhlnhvcehq