Horava-Lifshitz gravity, absolute time, and objective particles in curved space

Abstract

Recently, Horava formulated a renormalizable theory of quantum gravity that reduces to general relativity at large distances but violates Lorentz invariance at small distances. The absolute time involved in this theory allows to define an objective notion of particles associated with quantization of fields in classical gravitational backgrounds. The Unruh effect and other observer-dependent notions of particles in curved space are interpreted as effects caused by interaction between the objective vacuum and the measuring apparatus made up of objective particles.

8 pages, revised, new references, to appear in Mod. Phys. Lett. A

References in corpus (8)

• Quantum Gravity at a Lifshitz Point
• Spectral Dimension of the Universe in Quantum Gravity at a Lifshitz Point
• The black hole and FRW geometries of non-relativistic gravity
• Lorentz symmetry breaking as a quantum field theory regulator
• Thermodynamics of black holes in the deformed Hořava-Lifshitz gravity
• Hawking radiation of black holes in the $z=4$ Horava-Lifshitz gravity
• Generalized uncertainty principle and Hořava-Lifshitz gravity
• Generalized uncertainty principle, quantum gravity and Hořava-Lifshitz gravity

Cited by in corpus (11)

• Testing General Relativity in Cosmology
• Wormhole solutions to Horava gravity
• Primordial perturbations and non-Gaussianities in Hořava-Lifshitz gravity
• Particle Probe of Horava-Lifshitz Gravity
• The cosmological constant as an eigenvalue of the Hamiltonian constraint in Horava-Lifshits theory
• Toroidal solutions in Horava Gravity
• Gauge-Higgs Unification in Lifshitz Type Gauge Theory
• A physically-motivated quantisation of the electromagnetic field on curved spacetimes
• Analytical expressions for greybody factor and dynamic evolution for scalar field in Hořava-Lifshitz black hole
• Surplus Angle and Sign-flipped Coulomb Force in Projectable Horava-Lifshitz Gravity
• Domain Wall solutions to Horava gravity