Scalar-Tensor Gravity Theory For Dynamical Light Velocity

Abstract

A gravity theory is developed with the metric ${\hat{g}}_{\mu \nu }=g_{\mu \nu }+B{\partial }_{\mu }\varphi {\partial }_{\nu }\varphi$. In the present universe the additional contribution from the scalar field in the metric ${\hat{g}}_{\mu \nu }$ can generate an acceleration in the expansion of the universe, without negative pressure and with a zero cosmological constant. In this theory, gravitational waves will propagate at a different speed from non-gravitational waves. It is suggested that gravitational wave experiments could test this observational signature.

14 pages latex file. Additional material added. Accepted for publication in Physics Letters B

Cited by in corpus (80)

• The fundamental constants and their variation: observational status and theoretical motivations
• Gravity with a dynamical preferred frame
• Ghost Condensation and a Consistent Infrared Modification of Gravity
• Testable scenario for Relativity with minimum-length
• Beyond $\Lambda$CDM: Problems, solutions, and the road ahead
• Doubly-Special Relativity: First Results and Key Open Problems
• New varying speed of light theories
• Observer-independent quanta of mass and length
• Gravitational Lorentz Violations and Adjustment of the Cosmological Constant in Asymmetrically Warped Spacetimes
• Field-theoretical formulations of MOND-like gravity
• Covariant and locally Lorentz-invariant varying speed of light theories
• On causality and superluminal behavior in classical field theories. Applications to k-essence theories and MOND-like theories of gravity
• Spherical Solutions in Einstein-Aether Theory: Static Aether and Stars
• Static post-Newtonian equivalence of GR and gravity with a dynamical preferred frame
• Disformal Inflation
• Neutron stars in Einstein-aether theory
• Geometrodynamics of Variable-Speed-of-Light Cosmologies
• Numerical simulations of gravitational collapse in Einstein-aether theory
• Bi-metric Gravity and "Dark Matter"
• Stars and black holes in varying speed of light theories
• Predictions and Observations in Theories with Varying Couplings
• Spontaneous Violation of Lorentz Invariance and Ultra-High Energy Cosmic Rays
• Could thermal fluctuations seed cosmic structure?
• On the Stability of Jordan-Brans-Dicke Static Universe
• The minimally extended Varying Speed of Light (meVSL)
• Variable Speed of Light Cosmology, Primordial Fluctuations and Gravitational Waves
• Brane World Cosmologies with Varying Speed of Light
• A scalar-tensor cosmological model with dynamical light velocity
• Non-Metric Gravity I: Field Equations
• Shining Light on Modifications of Gravity
• Post-inflationary brane cosmology
• Accelerating Universe and Cosmological Perturbation in the Ghost Condensate
• The critical geometry of a thermal big bang
• Brans-Dicke brane cosmology
• Comments on "Note on varying speed of light theories"
• Quantum cosmology with varying speed of light: canonical approach
• Equivalence of cosmological observables in conformally related scalar tensor theories
• Vector field mediated models of dynamical light velocity
• Variable-Speed-of-Light Cosmology from Brane World Scenario
• Bimetric Gravity Theory, Varying Speed of Light and the Dimming of Supernovae
• Statistical hierarchy of varying speed of light cosmologies
• Second post-Newtonian approximation of Einstein-aether theory
• Primordial Adiabatic Fluctuations from Cosmic Defects
• New class of generalized coupling theories
• Shortcuts for Graviton Propagation in a Six Dimensional Brane World Model
• Disformally Coupled Quintessence
• A viable varying speed of light model in the RW metric
• Recovering a redshift-extended VSL signal from galaxy surveys
• Hairy Black Holes in Disformal Scalar-Tensor Gravity Theories
• A cosmology with variable c
• A varying-c cosmology
• Scale Invariant Spectrum from Variable Speed of Light Metric in a Bimetric Gravity Theory
• A Varying-e Brane World Cosmology
• Variable-Speed-of-Light Cosmology and Second Law of Thermodynamics
• Relativistic, Causal Description of Quantum Entanglement and Gravity
• Non-minimally coupled varying constants quantum cosmologies
• Constraints from CMB in the intermediate Brans-Dicke inflation
• Brans-Dicke DGP Brane Cosmology
• Emergence of multiverse in third quantized varying constants cosmologies
• Fluctuation Spectrum from a Scalar-Tensor Bimetric Gravity Theory
• Spinor wave function of the Universe in non-minimally coupled varying constants cosmologies
• Minimal exponential measure model in the post-Newtonian limit
• Examining the validity of the minimal varying speed of light model through cosmological observations: relaxing the null curvature constraint
• A Scalar-Tensor Bimetric Brane World Cosmology
• Cosmography of the minimally extended Varying Speed of Light Model
• Measuring the speed of light with cosmological observations: current constraints and forecasts
• Potential-driven Inflation with Disformal Coupling to Gravity
• Galaxy rotation curves and preferred reference frame effects
• Ether and Relativity
• Variable Speed of Light Cosmology and Bimetric Gravity: An Alternative to Standard Inflation
• Revisiting Varying Speed of Light in Cosmology: Insights from the Friedmann-Lemaître-Robertson-Walker Metric
• Variable Speed of Light Theories
• A mechanism to generate varying speed of light via Higgs-dilaton coupling: Theory and cosmological applications
• New analysis of SNeIa Pantheon Catalog: Variable speed of light as an alternative to dark energy
• Analysis of static and spherically-symmetric solutions in NDL theory of gravitation
• Perturbation Theory in the Minimally Extended Varying Speed of Light (meVSL) Model
• Decaying universes and the emergence of Bell-type interuniversal entanglement in varying fundamental constants cosmological model
• A model-independent test of speed of light variability with cosmological observations
• Black holes in the varying speed of light theory
• The Variable-c Cosmology as a Solution to Pioneer Anomaly