Repulsive gravity in the very early Universe
arXiv:gr-qc/9805060 · doi:10.1023/A:1026606925857
Abstract
I present two examples in which the curvature singularity of a radiation-dominated Universe is regularized by (a) the repulsive effects of spin interactions, and (b) the repulsive effects arising from a breaking of the local gravitational gauge symmetry. In both cases the collapse of an initial, asymptotically flat state is stopped, and the Universe bounces towards a state of decelerated expansion. The emerging picture is typical of the pre-big bang scenario, with the main difference that the string cosmology dilaton is replaced by a classical radiation fluid, and the solutions are not duality-invariant.
9 pages, LATEX, one figure included using epsf. Awarded the Fourth Prize in the 1998 Awards for Essays on Gravitation (Gravity Research Foundation, Wellesley Hills, Ma). To appear in Gen. Rel. Grav. An updated collection of papers on the pre-big bang scenario is available at http://www.to.infn.it/~gasperin
References in corpus (1)
Cited by in corpus (53)
- f(T) teleparallel gravity and cosmology
- Gravity with a dynamical preferred frame
- The Pre-Big Bang Scenario in String Cosmology
- Tests of Lorentz invariance: a 2013 update
- Einstein-Aether Waves
- Black holes in Einstein-aether and Horava-Lifshitz gravity
- Threshold effects and Planck scale Lorentz violation: combined constraints from high energy astrophysics
- Nonsingular, big-bounce cosmology from spinor-torsion coupling
- Spherical Solutions in Einstein-Aether Theory: Static Aether and Stars
- Static post-Newtonian equivalence of GR and gravity with a dynamical preferred frame
- Stability of the Einstein static Universe in gravity
- Self-tuning vacuum variable and cosmological constant
- Cosmology with a spin
- Undoing the twist: the Hořava limit of Einstein-aether
- Einstein-Cartan wormhole solutions
- Bouncing cosmological solutions from f(R,T) gravity
- Status of non-Riemannian cosmology
- Gravitational waves at the first post-Newtonian order with the Weyssenhoff fluid in Einstein-Cartan theory
- f(R) cosmology with torsion
- Ray tracing Einstein-Æther black holes: Universal versus Killing horizons
- Surface gravities for non-Killing horizons
- Phenomenology of theories of gravity without Lorentz invariance: the preferred frame case
- Cosmological models with Lagrange Multiplier Field
- Charged Wormhole Solutions in Einstein-Cartan gravity
- Dynamic wormhole solutions in Einstein-Cartan gravity
- Bounce cosmology in generalized modified gravities
- Gravitational Collapse of a Homogeneous Scalar Field in Deformed Phase Space
- Geodesic Congruences in the Palatini f(R) Theory
- A Specific Case of Generalized Einstein-aether Theories
- Cosmological Consequences of New Dark Energy Models in Einstein-Aether Gravity
- Astrophysical Bounds on Planck Suppressed Lorentz Violation
- Einstein-Cartan gravitational collapse of a homogeneous Weyssenhoff fluid
- Gravity and Electromagnetism with -type Coupling and Magnetic Monopole Solutions
- Fermion fields in Einstein-Cartan theory and the accelerated-decelerated transition in a primordial Universe
- Stability of the Einstein static Universe in Einstein-Cartan-Brans-Dicke gravity
- Renormalizability of the Dirac Equation in Torsion-Gravity with Non-Minimal Coupling
- Trapped surfaces and nature of singularities in Lyra's geometry
- Gravitating Brane Systems: Some General Theorems
- Analogue black holes in relativistic BECs: Mimicking Killing and universal horizons
- Emergent Cosmos in Einstein-Cartan Theory
- Revisiting wormhole energy conditions in Riemann-Cartan spacetimes and under Weyl transformations
- A new asymptotical flat and spherically symmetric solution in the generalized Einstein-Cartan-Kibble-Sciama gravity and gravitational lensing
- Torsion, Dirac Field, Dark Matter and Dark Radiation
- From pre- to post-big bang: an (almost) self-dual cosmological history
- Gravitational Collapse without Singularity Formation in Brans-Dicke Theory
- matching for asymptotically flat spacetimes
- Lorentz breaking Effective Field Theory and observational tests
- Static Vacuum Solutions on Curved Spacetimes with Torsion
- Gravitational Slip parameter and Gravitational Waves in Einstein-Cartan theory
- A discrete, unitary, causal theory of quantum gravity
- GUP Effective Metric Without GUP: Implications for the Sign of GUP Parameter and Quantum Bounce
- Gauge-Field-Induced Torsion and Cosmic Inflation
- Torsional four-fermion interaction and the Raychaudhuri equation