TY  - CONF
A1  - Hindmarsh, Mark
A1  - Philipsen, Owe
T1  - QCD equation of state and dark matter
T2  - Proceedings of Science
N2  - 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 equation of state suitable for use in relic density calculations. As an example,
we show that relic densities calculated by the dark matter package DarkSUSY receive corrections
of several per cent, within the observational accuracy of the Planck CMB mission, due for launch
in 2007.
Y1  - 2012
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/27281
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-272814
SN  - 1824-8039
N1  - 29th Johns Hopkins Workshop on current problems in particle theory: Strong matter in the heavens, Budapest, Hungary, August, 1-3 2005
VL  - 2005
IS  - JHW2005: 007
PB  - Scuola Internazionale Superiore di Studi Avanzati, SISSA
CY  - Trieste
ER  -