Conformal Gravity: Dark Matter and Dark Energy

Abstract

This short review examines recent progress in understanding dark matter, dark energy, and galactic halos using theory that departs minimally from standard particle physics and cosmology. Strict conformal symmetry (local Weyl scaling covariance), postulated for all elementary massless fields, retains standard fermion and gauge boson theory but modifies Einstein-Hilbert general relativity and the Higgs scalar field model, with no new physical fields. Subgalactic phenomenology is retained. Without invoking dark matter, conformal gravity and a conformal Higgs model fit empirical data on galactic rotational velocities, galactic halos, and Hubble expansion including dark energy.

9 pp in revtex format. References added with minor text revisions

References in corpus (6)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Universal Rotation Curve of Spiral Galaxies. II The Dark Matter Distribution out to the Virial Radius
• A Novel Test of the Modified Newtonian Dynamics with Gas Rich Galaxies
• Impact of a global quadratic potential on galactic rotation curves
• Fourth order Weyl gravity
• Schwarzschild limit of conformal gravity in the presence of macroscopic scalar fields

Cited by in corpus (13)

• Quasinormal modes and Hawking radiation of a charged Weyl black hole
• Restricted phase space thermodynamics of charged AdS black holes in conformal gravity
• Ergosphere, photon region structure, and the shadow of a rotating charged Weyl black hole
• Test of conformal gravity with astrophysical observations
• Motion of massive particles around a charged Weyl black hole and the geodetic precession of orbiting gyroscopes
• On Gravitational Energy in Conformal Teleparallel Gravity
• Theoretical implications of the galactic radial acceleration relation of McGaugh, Lelli, and Schombert
• Chaotic dynamics of string around the conformal black hole
• Anisotropic Conformal Dark Gravity on the Lorentz Tangent Bundle Spacetime
• Conformal Higgs model: Gauge fields can produce a 125GeV resonance
• Dark Coincidences: Small-Scale Solutions with Refracted Gravity and MOND
• Test of conformal theory of gravity as an alternative paradigm to dark matter hypothesis from gravitational lensing studies
• Conformal gravity: Newton's constant is not universal