Lorentz Violating Inflation

Abstract

We explore the impact of Lorentz violation on the inflationary scenario. More precisely, we study the inflationary scenario in the scalar-vector-tensor theory where the vector is constrained to be unit and time like. It turns out that the Lorentz violating vector affects the dynamics of the chaotic inflationary model and divides the inflationary stage into two parts; the Lorentz violating stage and the standard slow roll stage. We show that the universe is expanding as an exact de Sitter spacetime in the Lorentz violating stage although the inflaton field is rolling down the potential. Much more interestingly, we find exact Lorentz violating inflationary solutions in the absence of the inflaton potential. In this case, the inflation is completely associated with the Lorentz violation. We also mention some consequences of Lorentz violating inflation which can be tested by observations.

7 pages, 1 figure

References in corpus (1)

• Spontaneous Lorentz Breaking at High Energies

Cited by in corpus (27)

• Inflationary Universe with Anisotropic Hair
• Hemispherical power asymmetry in the three-year Wilkinson Microwave Anisotropy Probe sky maps
• Spontaneous Lorentz and Diffeomorphism Violation, Massive Modes, and Gravity
• Circular Polarization of Primordial Gravitational Waves in String-inspired Inflationary Cosmology
• Gauss-Bonnet cosmologies: crossing the phantom divide and the transition from matter dominance to dark energy
• Detecting a Lorentz-Violating Field in Cosmology
• Coincidences of Dark Energy with Dark Matter -- Clues for a Simple Alternative?
• Cosmological evolution in vector-tensor theories of gravity
• Mimicking Lambda with a spin-two ghost condensate
• Constraining Lorentz violation with cosmology
• Vector models of gravitational Lorentz symmetry breaking
• Generic features of Einstein-Aether black holes
• UV stable, Lorentz-violating dark energy with transient phantom era
• Einstein-aether gravity: a status report
• Accelerating Universe and Cosmological Perturbation in the Ghost Condensate
• Influence of Lorentz violation on Dirac quasinormal modes in the Schwarzschild black hole spacetime
• Some Impacts of Lorentz Violation on Cosmology
• Late-time acceleration and Phantom Divide Line Crossing with Non-minimal Coupling and Lorentz Invariance Violation
• Sigma-Model Aether
• Crossing of the Phantom Divided Barrier with Lorentz Invariance Violating Fields
• Cosmological evolution of interacting dark energy in Lorentz violation
• The Cosmology of a Universe with Spontaneously-Broken Lorentz Symmetry
• Attractor Solutions in Lorentz Violating Scalar-Vector-Tensor Theory
• Inflationary Spectra from Lorentz Violating Dissipative Models
• Time delay of light signals in an energy-dependent spacetime metric
• A Lorentz Invariance Violating Cosmology on the DGP Brane
• Impact of Lorentz Violation on Cosmology