TY  - JOUR
A1  - Giacosa, Francesco
T1  - Thermal ground state for pure SU(2) Yang-Mills thermodynamics
T2  - Proceedings of Science
N2  - 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.
Y1  - 2010
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/20014
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-82681
UR  - https://pos.sissa.it/archive/conferences/077/124/ConfinementVIII_124.pdf
SN  - 1824-8039
N1  - Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
VL  - 2008
IS  - (Confinement8)124
SP  - 1
EP  - 6
PB  - SISSA
CY  - Trieste
ER  -