McDonald, John (2007) Right-handed sneutrino condensate cold dark matter and the baryon-to-dark matter ratio. Journal of Cosmology and Astroparticle Physics, 2007 (01). 001. ISSN 1475-7516Full text not available from this repository.
The similarity of the observed densities of baryons and cold dark matter suggests that they have a common or related origin. This can be understood in the context of the MSSM with right-handed (RH) sneutrinos if cold dark matter is due to a d = 4 flat direction condensate of very weakly coupled RH sneutrino LSPs and the baryon asymmetry is generated by Affleck–Dine leptogenesis along the d = 4 (HuL)2 flat direction. The correct density of RH sneutrino dark matter is obtained if the reheating temperature is in the range 106–108 GeV. A cold dark matter isocurvature perturbation close to present observational bounds is likely in the case of inflation driven by a D-term or by an F-term with suppressed Hubble corrections to the A-terms. An observable baryon isocurvature perturbation is also possible in the case of D-term inflation models.
|Journal or Publication Title:||Journal of Cosmology and Astroparticle Physics|
|Uncontrolled Keywords:||dark energy theory ; baryon asymmetry ; inflation|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited By:||Dr John McDonald|
|Deposited On:||14 Aug 2008 13:28|
|Last Modified:||08 Dec 2016 01:11|
Actions (login required)