Thermal relics in cosmology with bulk viscosity

被引：0
作者：
A. Iorio
G. Lambiase
机构：
[1] Charles University in Prague,Faculty of Mathematics and Physics
[2] Universitá di Salerno,Dipartimento di Fisica E.R. Caianiello
[3] INFN,undefined
[4] Gruppo Collegato di Salerno,undefined
来源：
The European Physical Journal C | 2015年 / 75卷
关键词：
Dark Matter; Bulk Viscosity; Dark Matter Particle; Dark Matter Mass; Standard Cosmology;
D O I：
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中图分类号：
学科分类号：
摘要：
In this paper we discuss some consequences of cosmological models in which the primordial cosmic matter is described by a relativistic imperfect fluid. The latter takes into account the dissipative effects (bulk viscosity) arising from different cooling rates of the fluid components in the expanding Universe. We discuss, in particular, the effects of the bulk viscosity on Big Bang Nucleosynthesis and on the thermal relic abundance of particles, looking at recent results of PAMELA experiment. The latter has determined an anomalous excess of positron events, which cannot be explained by conventional cosmology and particle physics.
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[1]  
Zimdahl W(2001)undefined Phys. Rev. D 64 063501-undefined
[2]  
Schwarz DJ(2007)undefined Phys. Rev. D 76 103516-undefined
[3]  
Balakin AB(1998)undefined Phys. Rev. D 58 063503-undefined
[4]  
Pavon D(1998)undefined Phys. Rev. D 57 2245-undefined
[5]  
Colistete R(1996)undefined Phys. Rev. D 574 6101-undefined
[6]  
Fabris JC(1999)undefined Phys. Rev. D 61 023510-undefined
[7]  
Tossa J(2006)undefined Phys. Rev. D 74 043527-undefined
[8]  
Zimdahl W(2005)undefined Phys. Rev. D 72 023003-undefined
[9]  
Zimdahl W(2006)undefined Phys. Rev. D 73 043512-undefined
[10]  
Balakin AB(2011)undefined Phys. Rev. D 84 103508-undefined
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