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Many aspects of high-temperature gauge theories, such as the electroweak baryon number violation rate, color conductivity, and the hard gluon damping rate, have previously been understood only at leading logarithmic order (that is, neglecting effects suppressed only by an inverse logarithm of the gauge coupling). We discuss how to systematically go beyond… (More)
Scenarios for electroweak baryogenesis require an understanding of the effective potential at finite temperature near a first-order electroweak phase transition. Working in Landau gauge, we present a calculation of the dominant two-loop corrections to the ring-improved one-loop potential in the formal limit g 4 ≪ λ ≪ g 2 , where λ is the Higgs self-coupling… (More)
A proper sequence of effective theories, corresponding to larger and larger distance scales, is crucial for analyzing real-time equilibrium physics in hot non-Abelian plasmas. For the study of color dynamics (by which I mean physics involving long wavelength gauge fluctuations), an important stepping stone in the sequence of effective theories is to have a… (More)
We discuss the sequence of effective theories needed to understand the qualitative , and quantitative, behavior of real-time correlators A(t)A(0) in ultra-relativistic plasmas. We analyze in detail the case where A is a gauge-invariant conserved current. This case is of interest because it includes a correlation recently measured in lattice simulations of… (More)
It has recently been argued that the rate per unit volume of baryon number violation (topological transitions) in the hot, symmetric phase of electroweak theory is of the form η α 5 w T 4 in the weak-coupling limit, where η is a non-perturbative numerical coefficient. Over the past several years, there have been attempts to extract the rate of baryon number… (More)
Leading-log results are derived for the shear viscosity, electrical conductivity, and flavor diffusion constants in both Abelian and non-Abelian high temperature gauge theories with various matter field content.
We compute the free energy density for gauge theories, with fermions, at high temperature and zero chemical potential. Specifically, we analytically compute the free energy through O(g 4), which requires the evaluation of three-loop diagrams. This computation extends our previous result for pure gauge QCD.
OBJECTIVES To examine the effect of demographic change on employment patterns for general practitioners, medical specialists and nurses since 1986, and to compare their patterns of retirement. DESIGN AND SETTING Secondary analysis of previously unpublished Australian Bureau of Statistics Census data for the years 1986, 1991, 1996 and 2001. MAIN OUTCOME… (More)
In quantum electrodynamics, static electric fields are screened at non-zero temperatures by charges in the plasma. The inverse screening length, or De-bye mass, may be analyzed in perturbation theory and is of order eT at rela-tivistic temperatures. An analogous situation occurs when non-Abelian gauge theories are studied perturbatively, but the… (More)