Screened perturbation theory

Karsch F, Patkos A, Petreczky P (1997)
PHYSICS LETTERS B 401(1-2): 69-73.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Karsch, FrithjofUniBi; Patkos, A; Petreczky, P
Abstract / Bemerkung
A new perturbative scheme is proposed for the evaluation of the free energy density of field theories at finite temperature. The screened loop expansion takes into account exactly the phenomenon of screening in thermal propagators. The approach is tested in the N-component scalar field theory at 2-loop level and also at 3-loop in the large-N limit. The perturbative series generated by the screened loop expansion shows much better numerical convergence than previous expansions generated in powers of the quartic coupling. (C) 1997 Elsevier Science B.V.
Stichworte
QCD; free energy density; Debye screening; loop; expansion; gap equation; high-T expansion; scalar field theory
Erscheinungsjahr
1997
Zeitschriftentitel
PHYSICS LETTERS B
Band
401
Ausgabe
1-2
Seite(n)
69-73
ISSN
0370-2693
Page URI
https://pub.uni-bielefeld.de/record/1636813

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Karsch F, Patkos A, Petreczky P. Screened perturbation theory. PHYSICS LETTERS B. 1997;401(1-2):69-73.
Karsch, F., Patkos, A., & Petreczky, P. (1997). Screened perturbation theory. PHYSICS LETTERS B, 401(1-2), 69-73. doi:10.1016/S0370-2693(97)00392-4
Karsch, F., Patkos, A., and Petreczky, P. (1997). Screened perturbation theory. PHYSICS LETTERS B 401, 69-73.
Karsch, F., Patkos, A., & Petreczky, P., 1997. Screened perturbation theory. PHYSICS LETTERS B, 401(1-2), p 69-73.
F. Karsch, A. Patkos, and P. Petreczky, “Screened perturbation theory”, PHYSICS LETTERS B, vol. 401, 1997, pp. 69-73.
Karsch, F., Patkos, A., Petreczky, P.: Screened perturbation theory. PHYSICS LETTERS B. 401, 69-73 (1997).
Karsch, Frithjof, Patkos, A, and Petreczky, P. “Screened perturbation theory”. PHYSICS LETTERS B 401.1-2 (1997): 69-73.

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arXiv: hep-ph/9702376

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