The Cosmology of a Universe with Spontaneously-Broken Lorentz Symmetry

Abstract

A self consistent effective field theory of modified gravity has recently been proposed with spontaneous breaking of local Lorentz invariance. The symmetry is broken by a vector field with the wrong-sign mass term and it has been shown to have additional graviton modes and modified dispersion relations. In this paper we study the evolution of a homogeneous and isotropic universe in the presence of such a vector field with a minimum lying along the time-like direction. A plethora of different regimes is identified, such as accelerated expansion, loitering, collapse and tracking.

References in corpus (25)

• Is Cosmic Speed-Up Due to New Gravitational Physics?
• Relativistic gravitation theory for the MOND paradigm
• Gravity with a dynamical preferred frame
• Ghost Condensation and a Consistent Infrared Modification of Gravity
• Effective Field Theory for Massive Gravitons and Gravity in Theory Space
• Scalar-Tensor-Vector Gravity Theory
• Nonperturbative Continuity in Graviton Mass versus Perturbative Discontinuity
• Classical and Quantum Consistency of the DGP Model
• Metastable Gravitons and Infinite Volume Extra Dimensions
• Einstein-Aether Waves
• Lorentz-Violating Vector Fields Slow the Universe Down
• Large Scale Structure in Bekenstein's theory of relativistic Modified Newtonian Dynamics
• Constraining the New Aether: Gravitational Cherenkov Radiation
• Post-Newtonian parameters and constraints on Einstein-aether theory
• Effective Lagrangians and Universality Classes of Nonlinear Bigravity
• Ghosts, Instabilities, and Superluminal Propagation in Modified Gravity Models
• Can Cosmic Structure form without Dark Matter?
• Ghost conditions for Gauss-Bonnet cosmologies
• Lorentz Violating Inflation
• Modified Gravity via Spontaneous Symmetry Breaking
• Brane Universe and Multigravity: Modification of gravity at large and small distances
• Bi-metric Gravity and "Dark Matter"
• Softly Massive Gravity
• Radiation Damping in Einstein-Aether Theory
• Energy in the Einstein-Aether Theory

Cited by in corpus (14)

• A cosmic vector for dark energy
• Detecting a Lorentz-Violating Field in Cosmology
• Coincidences of Dark Energy with Dark Matter -- Clues for a Simple Alternative?
• Constraining Lorentz violation with cosmology
• UV stable, Lorentz-violating dark energy with transient phantom era
• New Gravitational Scales in Cosmological Surveys
• Anisotropic cosmological reconstruction in $f(R,T)$ gravity
• Dark Fluid: Towards a unification of empirical theories of galaxy rotation, Inflation and Dark Energy
• Vector field theories in cosmology
• Testing Alternative Theories of Dark Matter with the CMB
• A Lorentz Invariance Violating Cosmology on the DGP Brane
• Observational Constraints on Local Lorentz Invariance
• Resolving Puzzles of Massive Gravity with and without violation of Lorentz symmetry
• Linearized Lorentz-Violating Gravity and Discriminant Locus in the Moduli Space of Mass Terms