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hep-ph1998
New Mesons in the Chirally Symmetric Plasma
H. Arthur Weldon
A nonperturbative proof is given that the chirally-invariant quark propagator contains both particle and hole singularities with different dispersion relations. Mesons made of a qu…
hep-ph1998
Quasiparticles in Finite-Temperature Field Theory
H. Arthur Weldon
Conventional finite-temperature perturbation theory in which propagators have poles at is shown to break down at the two-loop level for self-interacting scalar fields…