Scalar-field theory of dark matter

Abstract

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.

25 pages, 9 figures. A new section "Long-ranged force induced by the scalar field" is added, plus a few clarifications in the paper. References updated. To appear in International Journal of Modern Physics A

References in corpus (10)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• A direct empirical proof of the existence of dark matter
• A Dark Core in Abell 520
• Intermediate inflation in light of the three-year WMAP observations
• Cosmological Inhomogeneities with Bose-Einstein Condensate Dark Matter
• Scalar Field Cosmology I: Asymptotic Freedom and the Initial-Value Problem
• Scalar Field Cosmology II: Superfluidity, Quantum Turbulence, and Inflation
• BEC dark matter can explain collisions of galaxy clusters
• Statefinder analysis of the superfluid Chaplygin gas model

Cited by in corpus (14)

• Understanding the Core-Halo Relation of Quantum Wave Dark Matter, $\psi$DM, from 3D Simulations
• Brief History of Ultra-light Scalar Dark Matter Models
• Comparison of numerical methods for the nonlinear Klein-Gordon equation in the nonrelativistic limit regime
• Relativistic superfluidity and vorticity from the nonlinear Klein-Gordon equation
• Quaternion algebra on 4D superfluid quantum space-time. Gravitomagnetism
• Towards High-quality Visualization of Superfluid Vortices
• Testing two alternatives theories to dark matter with the Milky Way dynamics
• Proposal of a computational approach for simulating thermal bosonic fields in phase space
• Quantum vorticity in nature
• Fantasia of a Superfluid Universe -- In memory of Kerson Huang
• From the Fourth Color to Spin-charge Separation - Neutrinos and Spinons
• Galaxies with Fuzzy Dark Matter
• Topological Phase Transitions in Superfluids Near Black Hole Horizons
• Relativistic two-fluid hydrodynamics with quantized vorticity from the nonlinear Klein-Gordon equation