Damping of inhomogeneities in neutralino dark matter

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dc.creatorSchwarz, Dominik J.
dc.creatorHofmann, Stefan
dc.creatorStoecker, Horst
dc.date2001-10-29
dc.date.accessioned2026-07-07T02:01:02Z
dc.date.available2026-07-07T02:01:02Z
dc.descriptionThe 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 O(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 gravitationally bound neutralino clouds have masses above 10^(-6) M_\odot.
dc.description5 pages, 3 figures; contribution to the HEP2001 proceedings
dc.identifierhttps://arxiv.org/abs/astro-ph/0110601
dc.identifierhttp://arxiv.org/abs/astro-ph/0110601
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3612
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDamping of inhomogeneities in neutralino dark matter
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