期刊
MODERN PHYSICS LETTERS A
卷 29, 期 2, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S021773231430002X
关键词
Cosmology; scalar-field dark matter; galactic halos
资金
- U.S. NSF [AST-0708176, AST-1009799]
- NASA [NNX07111109G, NNG04G177G, NNX11AE09G]
- Texas Cosmology Center of the University of Texas at Austin
- Michigan Center for Theoretical Physics of the University of Michigan
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1009799] Funding Source: National Science Foundation
- NASA [NNX11AE09G, 148581] Funding Source: Federal RePORTER
The nature of the cosmological dark matter (DM) remains elusive. Recent studies have advocated the possibility that DM could be composed of ultra-light, self-interacting bosons, forming a Bose-Einstein condensate (BEC) in the very early Universe. We consider models which are charged under a global U(1)-symmetry such that the DM number is conserved. It can then be described as a classical complex scalar field which evolves in an expanding Universe. We present a brief review on the bounds on the model parameters from cosmological and galactic observations, along with the properties of galactic halos which result front such a DM candidate.
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