Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1993-12-31
Nucl.Phys. B425 (1994) 553-578
Physics
High Energy Physics
High Energy Physics - Phenomenology
in LATEX, 30 pages; two figures available on request from the authors; USITP-93-19, SUNY-NTG-43, (explanations to the figures
Scientific paper
10.1016/0550-3213(94)90287-9
We discuss the correlation function of hadronic currents in the Schwinger model at finite temperature $T$. We explicitly construct the retarded correlator in real time and obtain analytical results for the Euclidean correlator on a torus. Both constructions lead to the same finite temperature spectral function. The spatial screening lengths in the mesonic channels are related to the dynamical meson mass $m=e/\sqrt{\pi}$ and not $2\pi T$ even in the infinite temperature limit. The relevance of our results for the finite temperature problem in four dimensions is discussed.
Fayyazuddin Ansar
Hansson T. H.
Nowak Maciej A.
Verbaarschot Jacobus J. M.
Zahed Ismail
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