Rapid cosmological simulations in Scalar Field Dark Matter models

The process of structure formation in the Universe can be explained by means of the gravitational instability of the different matter components, in particular that of the so-called dark matter field. In this work, we consider that dark matter can be described by an ultra-light scalar field minimall...

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Published inJournal of physics. Conference series Vol. 1030; no. 1; pp. 12007 - 12012
Main Authors Martínez-Carrillo, Rebeca, Arturo Ureña-López, L.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.05.2018
Subjects
Astronomical models
Big Bang theory
Cold dark matter
Dark matter
Expanding universe theory
Gravitational instability
Perturbation
Physics
Scalars
Universe
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Summary:The process of structure formation in the Universe can be explained by means of the gravitational instability of the different matter components, in particular that of the so-called dark matter field. In this work, we consider that dark matter can be described by an ultra-light scalar field minimally coupled to gravity, and its gravitational instability in an expanding universe is studied with the help of standard techniques for fluid matter components. Analytical and numerical solutions are shown, for both linear and non-linear perturbations, and compared with those of the standard cold dark matter model. We conclude that non-linear perturbations of the scalar field are indistinguishable from those of cold dark matter as long as the field mass is larger than 10−25eV.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1030/1/012007