Thermal variational principle and gauge fields

Schroeder Y, Schulz H (1996)
Phys.Rev. D 54(12): 7677-7694.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
A Feynman-Jensen version of the thermal variational principle is applied tohot gauge fields, Abelian as well as non-Abelian: scalar electrodynamics(without scalar self-coupling) and the gluon plasma. The perturbatively knownself-energies are shown to derive by variation from a free quadratic(''Gaussian'') trial Lagrangian. Independence of the covariant gauge fixingparameter is reached (within the order $g^3$ studied) after a reformulation ofthe partition function such that it depends on only even powers of the gaugefield. Also static properties (Debye screening) are reproduced this way. Butbecause of the present need to expand the variational functional, the methodfalls short of its potential nonperturbative power.
Erscheinungsjahr
1996
Zeitschriftentitel
Phys.Rev. D
Band
54
Ausgabe
12
Seite(n)
7677-7694
ISSN
0556-2821
eISSN
1089-4918
Page URI
https://pub.uni-bielefeld.de/record/1964010

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Schroeder Y, Schulz H. Thermal variational principle and gauge fields. Phys.Rev. D. 1996;54(12):7677-7694.
Schroeder, Y., & Schulz, H. (1996). Thermal variational principle and gauge fields. Phys.Rev. D, 54(12), 7677-7694. doi:10.1103/PhysRevD.54.7677
Schroeder, Y., and Schulz, H. (1996). Thermal variational principle and gauge fields. Phys.Rev. D 54, 7677-7694.
Schroeder, Y., & Schulz, H., 1996. Thermal variational principle and gauge fields. Phys.Rev. D, 54(12), p 7677-7694.
Y. Schroeder and H. Schulz, “Thermal variational principle and gauge fields”, Phys.Rev. D, vol. 54, 1996, pp. 7677-7694.
Schroeder, Y., Schulz, H.: Thermal variational principle and gauge fields. Phys.Rev. D. 54, 7677-7694 (1996).
Schroeder, York, and Schulz, Hermann. “Thermal variational principle and gauge fields”. Phys.Rev. D 54.12 (1996): 7677-7694.

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PMID: 10020781
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arXiv: hep-ph/9510305

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