Four-loop pressure of massless O(N) scalar field theory

Gynther A, Laine M, Schroeder Y, Torrero C, Vuorinen A (2007)
JHEP 2007(04): 94.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Thanks to dimensional reduction, the contributions to the hot QCD pressure coming from so-called soft modes can be studied via an effective three-dimensional theory named Electrostatic QCD (spatial Yang-Mills fields plus an adjoint Higgs scalar). The poor convergence of the perturbative series within EQCD suggests to perform lattice measurements of some of the associated gluon condensates. These turn out, however, to be plagued by large discretization artifacts. We discuss how Numerical Stochastic Perturbation Theory can be exploited to determine the full lattice spacing dependence of one of these condensates up to 4-loop order, and sharpen our tools on a concrete 2-loop example.
Stichworte
field theory: scalar; massless; expansion: weak coupling; pressure; symmetry: O(N)
Erscheinungsjahr
2007
Zeitschriftentitel
JHEP
Band
2007
Ausgabe
04
Art.-Nr.
94
ISSN
1029-8479
Page URI
https://pub.uni-bielefeld.de/record/1917697

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Gynther A, Laine M, Schroeder Y, Torrero C, Vuorinen A. Four-loop pressure of massless O(N) scalar field theory. JHEP. 2007;2007(04): 94.
Gynther, A., Laine, M., Schroeder, Y., Torrero, C., & Vuorinen, A. (2007). Four-loop pressure of massless O(N) scalar field theory. JHEP, 2007(04), 94. doi:10.1088/1126-6708/2007/04/094
Gynther, A., Laine, M., Schroeder, Y., Torrero, C., and Vuorinen, A. (2007). Four-loop pressure of massless O(N) scalar field theory. JHEP 2007:94.
Gynther, A., et al., 2007. Four-loop pressure of massless O(N) scalar field theory. JHEP, 2007(04): 94.
A. Gynther, et al., “Four-loop pressure of massless O(N) scalar field theory”, JHEP, vol. 2007, 2007, : 94.
Gynther, A., Laine, M., Schroeder, Y., Torrero, C., Vuorinen, A.: Four-loop pressure of massless O(N) scalar field theory. JHEP. 2007, : 94 (2007).
Gynther, A., Laine, Mikko, Schroeder, York, Torrero, C., and Vuorinen, Aleksi. “Four-loop pressure of massless O(N) scalar field theory”. JHEP 2007.04 (2007): 94.

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arXiv: hep-ph/0703307

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