Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-07-17
CONTINUOUS ADVANCES IN QCD 2006 Proceedings of the Conference Minneapolis, USA 11 - 14 May 2006
Physics
High Energy Physics
High Energy Physics - Theory
8 pages, 1 figure, talk delivered at Continuous Advances in QCD 2006, Minneapolis, contains more information than the talk, v2
Scientific paper
We present an overview on nonperturbative thermodynamics in the deconfining phase of an SU(2) Yang-Mills theory. In a unique effective theory the maximal resolution of trivial-topology fluctuations is constrained by coarse-grained, interacting calorons and anticalorons. Loop expansions of thermodynamical quantities are discussed. Postulating that SU(2)$_{\tiny{CMB}}\stackrel{\tiny{today}}=U(1)_Y$, a modification of thermalized, low-momentum photon propagation is predicted for temperatures a few times that of the cosmic microwave background. We discuss phenomenological implications: magnetic-field induced dichroism and birefringence at a temperature of 4.2 K (PVLAS), stability of cold and dilute clouds of atomic hydrogen in our galaxy, and absence of low-$l$ correlations in the TT CMB power spectrum.
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