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Scalar-field theory of dark matter

We develop a theory of dark matter based on a previously proposed picture, in which a complex vacuum scalar field makes the universe a superfluid, with the energy density of the superfluid giving rise to dark energy, and variations from vacuum density giving rise to dark matter. We formulate a nonlinear Klein-Gordon equation to describe the superfluid, treating galaxies as external sources. We study the response of the superfluid to the galaxies, in particular, the emergence of the dark-matter galactic halo, contortions during galaxy collisions, and the creation of vortices due to galactic rotation.

preprint2014arXivOpen access
Kerson HuangChi XiongXiaoFei Zhao
gr-qchep-th
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Open access3 authors2 topics
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Kerson HuangChi XiongXiaoFei Zhao

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