Equation of state of dark matter after Planck data
نویسندگان
چکیده
منابع مشابه
QCD Equation of State and Dark Matter
The QCD equation of state is not often discussed in cosmology. However, the relic density of weakly interacting massive particles (WIMPs) depends on the entropy and the expansion rate of the Universe when they freeze out, at a temperature in the range 400 MeV – 40GeV, where QCD corrections are still important. We use recent analytic and lattice calculations of the QCD pressure to produce a new ...
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*Correspondence: Sofiane M. Boucenna, Edificio de Institutos de Paterna, Instituto de Física Corpuscular – C.S.I.C./ Universitat de València, Apartado 22085, E–46071 València, Spain e-mail: [email protected] There exists a widely known conjecture that gravitational effects violate global symmetries. We study the effect of global-symmetry violating higher-dimension operators induced by Planck-...
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While there exist various candidates, the nature of dark matter remains unresolved. Recently it was argued that the generalized uncertainty principle (GUP) may prevent a black hole from evaporating completely, and as a result there should exist a Plancksize black hole remnant (BHR) at the end of its evaporation. If a sufficient amount of small black holes can be produced in the early universe, ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2013
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.88.127301