Thermal ground state for pure SU(2) Yang-Mills thermodynamics

  • In this proceeding the emergence of a composite, adjoint-scalar field as an average over (trivial holonomy) calorons and anti-calorons is reviewed. This composite field acts as a background field to the dynamics of perturbative gluons, to which it is coupled via an effective, gauge invariant Lagrangian valid for temperatures above the deconfinement phase transition. Moreover a Higgs mechanism is induced by the composite field: two gluons acquire a quasi-particle thermal mass. On the phenomenological side the composite field acts as a bag pressure which shows a linear dependence on the temperature. As a result the linear rise with temperature of the trace anomaly is obtained and is compared to recent lattice studies.

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Author:Francesco GiacosaORCiDGND
ArXiv Id:
Parent Title (English):Proceedings of Science
Place of publication:Trieste
Document Type:Article
Date of Publication (online):2010/10/19
Year of first Publication:2008
Publishing Institution:Universit├Ątsbibliothek Johann Christian Senckenberg
Contributing Corporation:8th Conference Quark Confinement and the Hadron Spectrum, September 1-6 2008, Mainz, Germany
Release Date:2010/10/19
Page Number:6
First Page:1
Last Page:6
Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Source:PoS (Confinement8) 124 ; Proceedings of the 8th Conference Quark Confinement and the Hadron Spectrum. September 1-6, 2008, Mainz, Germany
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - Namensnennung-Keine kommerzielle Nutzung-Weitergabe unter gleichen Bedingungen