A current algebra argument claims that pion-like excitations above the chiral restoration temperature must be much larger than ordinary pions, independent of any model.
The quark kinetic part is chirally symmetric while the confining part is invariant under larger symmetry groups: SU (2)CS , SU (2NF ), and SU (2NF ) × SU (2NF ) [12, 13]
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A large size of the pion-like excitations in the stringy fluid above $T_{ch}$ is model independent and required by current algebra
A current algebra argument claims that pion-like excitations above the chiral restoration temperature must be much larger than ordinary pions, independent of any model.