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20 papers · 2 filters
Post-inflationary thermalization with hadronization scenario
Prashanth Jaikumar, Anupam Mazumdar
We study thermalization of the early Universe when the inflaton can decay into the Standard Model (SM) quarks and gluons, using QCD arguments. We describe the possible formation of…
A Model for the Color Glass Condensate Versus Jet Quenching
A. Contogouris, F. K. Diakonos, P. K. Papachristou
A model for the Color Glass Condensate as opposed to jet quenching is proposed for the explanation of the presently available RHIC data. Good fits to these data are presented. A cl…
Transport Coefficients at Leading Order: Kinetic Theory versus Diagrams
Guy D. Moore
I review what is required to compute transport coefficients in ultra-relativistic, weakly coupled gauge theories, at leading order in , using kinetic theory. Then I discuss how…
Adiabatic density perturbations and matter generation from the MSSM
Kari Enqvist, Shinta Kasuya, Anupam Mazumdar
We propose that the inflaton is coupled to ordinary matter only gravitationally and that it decays into a completely hidden sector. In this scenario both baryonic and dark matter o…
Landau-Pomeranchuk-Migdal resummation for dilepton production
P. Aurenche, F. Gelis, G. D. Moore +1
We consider the thermal emission rate of dileptons from a QCD plasma in the small invariant mass ($Q^2 \sim \gs^2 T^2$) but large energy ($q^0 \gsim T$) range. We derive an integra…
Problems with Time-Varying Extra Dimensions or "Cardassian Expansion" as Alternatives to Dark Energy
James M. Cline, Jérémie Vinet
It has recently been proposed that the Universe might be accelerating as a consequence of extra dimensions with time varying size. We show that although these scenarios can lead to…