Damping of inhomogeneities in neutralino dark matter
- The lightest supersymmetric particle, most likely the neutralino, might account for a large fraction of dark matter in the Universe.We show that the primordial spectrum of density fluctuations in neutralino cold dark matter (CDM) has a sharp cut-off due to two damping mechanisms: collisional damping during the kinetic decoupling of the neutralinos at (10 MeV) and free streaming after last scattering of neutralinos. The cut-off in the primordial spectrum defines a minimal mass for CDM objects in hierarchical structure formation. For typical neutralino and sfermion masses the first gravitionally bound neutralino clouds have masses above 10 -6 M .
| Author: | Dominik J. Schwarz, Stefan Hofmann, Horst StöckerORCiDGND |
|---|---|
| URN: | urn:nbn:de:hebis:30-21431 |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2005/11/17 |
| Year of first Publication: | 2001 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2005/11/17 |
| Tag: | dunkle Materie; neutralino; supersymmetrische Partikel dark matter; neutralino; supersymmetric particle |
| Note: | In *Budapest 2001, High energy physics* hep2001/20. [astro-ph/0110601] |
| Source: | In *Budapest 2001, High energy physics* hep2001/20. [astro-ph/0110601] |
| HeBIS-PPN: | 22645424X |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  Deutsches Urheberrecht |
