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 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.
| Author: | Mark Hindmarsh, Owe PhilipsenORCiDGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-272814 |
| ISSN: | 1824-8039 |
| Parent Title (English): | Proceedings of Science |
| Publisher: | Scuola Internazionale Superiore di Studi Avanzati, SISSA |
| Place of publication: | Trieste |
| Document Type: | Conference Proceeding |
| Language: | English |
| Date of Publication (online): | 2012/12/17 |
| Year of first Publication: | 2006 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2012/12/17 |
| Volume: | 2005 |
| Issue: | JHW2005: 007 |
| Page Number: | 7 |
| Note: | 29th Johns Hopkins Workshop on current problems in particle theory: Strong matter in the heavens, Budapest, Hungary, August, 1-3 2005 |
| HeBIS-PPN: | 316076546 |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung-Keine kommerzielle Nutzung-Weitergabe unter gleichen Bedingungen |
