Power spectrum for the Bose-Einstein condensate dark matter

Velten H, Wamba E (2012)
Physics Letters B 709(1-2): 1-5.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
We assume that dark matter is composed of scalar particles that form a Bose-Einstein condensate (BEC) at some point during the cosmic evolution. Afterwards, cold dark matter is in the form of a condensate and behaves slightly different from the standard dark matter component. We study the large scale perturbative dynamics of the BEC dark matter in a model where this component coexists with baryonic matter and cosmological constant. The perturbative dynamics is studied using neo-Newtonian cosmology (where the pressure is dynamically relevant for the homogeneous and isotropic background) which is assumed to be correct for small values of the sound speed. We show that BEC dark matter effects can be seen in the matter power spectrum if the mass of the condensate particle lies in the range 15 meV < m(chi) < 700 meV leading to a small, but perceptible, excess of power at large scales. (C) 2012 Elsevier B.V. All rights reserved.
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Zeitschriftentitel
Physics Letters B
Band
709
Zeitschriftennummer
1-2
Seite
1-5
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Velten H, Wamba E. Power spectrum for the Bose-Einstein condensate dark matter. Physics Letters B. 2012;709(1-2):1-5.
Velten, H., & Wamba, E. (2012). Power spectrum for the Bose-Einstein condensate dark matter. Physics Letters B, 709(1-2), 1-5. doi:10.1016/j.physletb.2012.01.071
Velten, H., and Wamba, E. (2012). Power spectrum for the Bose-Einstein condensate dark matter. Physics Letters B 709, 1-5.
Velten, H., & Wamba, E., 2012. Power spectrum for the Bose-Einstein condensate dark matter. Physics Letters B, 709(1-2), p 1-5.
H. Velten and E. Wamba, “Power spectrum for the Bose-Einstein condensate dark matter”, Physics Letters B, vol. 709, 2012, pp. 1-5.
Velten, H., Wamba, E.: Power spectrum for the Bose-Einstein condensate dark matter. Physics Letters B. 709, 1-5 (2012).
Velten, Hermano, and Wamba, Etienne. “Power spectrum for the Bose-Einstein condensate dark matter”. Physics Letters B 709.1-2 (2012): 1-5.

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