Scalar Non-Luminous Matter in Galaxies
B. J. Lee, T. H. Lee (Soongsil Univ., Seoul, Korea)
TL;DR
This paper explores a model of scalar non-luminous matter as a dark matter candidate in galaxies, using SU(3) scalar fields with symmetry breaking, to explain flat rotation curves and contribute to cosmological acceleration theories.
Contribution
It introduces a novel scalar field model with SU(3) symmetry breaking coupled to gravity, providing solutions relevant for galactic rotation curves and dark energy.
Findings
Derived simple scalar field solutions explaining flat rotation curves.
Demonstrated potential for scalar fields to model dark matter in galaxies.
Linked scalar field behavior to late-time cosmic acceleration.
Abstract
As a candidate for dark matter in galaxies, we study an SU(3) triplet of complex scalar fields which are non-minimally coupled to gravity. In the spherically symmetric static spacetime where the flat rotational velocity curves of stars in galaxies can be explained, we find simple solutions of scalar fields with SU(3) global symmetry broken to U(1) X U(1), in an exponential scalar potential, which will be useful in a quintessence model of the late-time acceleration of the Universe.
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