[Formula Presented]-scattering lengths at finite temperature

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Abstract

We calculate in the one-loop approximation of chiral perturbation theory the temperature dependence of the S- and P-wave [Formula Presented]-scattering lengths. We find that the isospin-zero S-wave scattering length [Formula Presented] stays constant at the level of 2% for temperatures [Formula Presented]. In contrast to this the isospin-two S-wave scattering length [Formula Presented] decreases in magnitude by about 40% and the isospin-one P-wave scattering length [Formula Presented] increases by about 10% for [Formula Presented] We also compare with the temperature dependence of the quark condensate [Formula Presented] and the pion decay constant [Formula Presented]

Original languageEnglish
Pages (from-to)2945-2947
Number of pages3
JournalPhysical Review C - Nuclear Physics
Volume59
Issue number5
DOIs
StatePublished - 1999

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