Home > Research > Publications & Outputs > Multiple dark matter scenarios from ubiquitous ...

Associated organisational unit

Electronic data

  • PhysRevD

    Rights statement: © 2013 American Physical Society

    Final published version, 661 KB, PDF-document

Links

Text available via DOI:

View graph of relations

Multiple dark matter scenarios from ubiquitous stringy throats

Research output: Contribution to journalJournal article

Published
Close
Article number063522
<mark>Journal publication date</mark>22/03/2013
<mark>Journal</mark>Physical Review D
Issue number6
Volume87
Number of pages11
<mark>State</mark>Published
<mark>Original language</mark>English

Abstract

We discuss the possibility of having multiple Kaluza-Klein (KK) dark matter candidates which arise naturally in generic Type-IIB string theory compactification scenarios. These dark matter candidates reside in various throats of the Calabi-Yau manifold. In principle, they can come with varied range of masses in four-dimensions depending upon the hierarchical warping of the throats. We show that consistency with cosmological bounds and four-dimensional effective theory description imposes strong constraints on the parameter space and the geometry of the throats. With a rather model-independent approach, we find that the mass scales allowed for the KK dark matter particles in various throats can vary between 0.1 eV and 10 TeV, depending upon the throat geometry. Thus, there could be simultaneously more than one kind of cold (and possibly warm and hot) dark matter components residing in the Universe. This multiple dark matter scenario could weaken the bound on a conventional supersymmetric dark matter candidate and could also account for extra relativistic degrees of freedom in our Universe.

Bibliographic note

© 2013 American Physical Society
11 pages plus bibliography, added references, version published by Physical Review D