Weyl conformal symmetry model of the dark galactic halo
Abstract
The postulate of universal conformal (local Weyl scaling) symmetry modifies both general relativity and the Higgs scalar field model. The conformal Higgs model (CHM) generates an effective cosmological constant that fits observed accelerating Hubble expansion for redshifts z≤ 1 (7.33 Gyr) accurately with only one free parameter. Growth of a galaxy is modeled by central accumulation of matter from an enclosing empty spherical halo whose radius expands with depletion. Details of this process account for the nonclassical radial centripetal acceleration observed as excessive orbital velocities in galactic haloes. There is no need for dark matter.
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