Cosmology from pregeometry
arXiv:2104.14013 · doi:10.1103/PhysRevD.104.104040
Abstract
We discuss cosmological solutions for a diffeomorphism invariant gauge theory of the non-compact Lorentz group . Besides the gauge bosons our model of pregeometry contains a vector field in the vector representation of and a scalar singlet. General relativity and variable gravity emerge as effective theories for large distances and times in Planck units. We propose an approximation to the effective action with up to two derivatives. For a suitable range of parameters the universe approaches for large times stable Minkowski space. For late cosmology the model predicts dynamical dark energy and provides for a candidate for dark matter. Early cosmology is characterized by an inflationary epoch. The beginning of the universe in the infinite past is great emptiness, corresponding to an ultraviolet fixed point with the associated quantum scale symmetry. The beginning universe is a vacuum state with vanishing expectation values and finite non-vanishing correlation functions for the fluctuations of all fields. There is no physical big bang singularity.
arXiv commentFurther explanations, new references, 63 pages, 9 figures
References in corpus (70)
- Cosmology and the Fate of Dilatation Symmetry
- Exact evolution equation for the effective potential
- Coupled Quintessence
- Reheating after Inflation
- Metric-Affine Gauge Theory of Gravity: Field Equations, Noether Identities, World Spinors, and Breaking of Dilation Invariance
- Nonperturbative Evolution Equation for Quantum Gravity
- Universe Reheating after Inflation
- Physical Aspects of the Space-Time Torsion
- Quintessential inflation
- Renormalization Group Flow of Quantum Gravity in the Einstein-Hilbert Truncation
- Structure of Resonance in Preheating after Inflation
- Ultraviolet Fixed Point and Generalized Flow Equation of Quantum Gravity
- The Unity of Cosmological Attractors
- A systematic approach to generalisations of General Relativity and their cosmological implications
- Non-Trivial Ultraviolet Fixed Point in Quantum Gravity
- Agravity
- The Running Gravitational Couplings
- Scale invariance, unimodular gravity and dark energy
- Growing Matter
- The effective field theory treatment of quantum gravity
- Growing neutrinos and cosmological selection
- Equivalence of the Einstein and Jordan frames
- Towards apparent convergence in asymptotically safe quantum gravity
- Einstein and Jordan frames reconciled: a frame-invariant approach to scalar-tensor cosmology
- Agravity up to infinite energy
- Conformal-Frame (In)dependence of Cosmological Observations in Scalar-Tensor Theory
- Variable gravity: A suitable framework for quintessential inflation
- Invariant quantities in the scalar-tensor theories of gravitation
- Variable gravity Universe
- A New Class of Ghost and Tachyon Free Metric Affine Gravities
- Emergent scale symmetry: Connecting inflation and dark energy
- Higgs scalar potential in asymptotically safe quantum gravity
- A class of quintessential inflation models with parameter space consistent with BICEP2
- Non-perturbative unitarity and fictitious ghosts in quantum gravity
- Dilaton Quantum Gravity
- Finite Quantum Gravity Amplitudes -- no strings attached
- A frame independent classification of single field inflationary models
- Exact and Truncated Dynamics in Nonequilibrium Field Theory
- Gravity from Spinors
- Inflation, quintessence, and the origin of mass
- Variable Planck mass from the gauge invariant flow equation
- Scaling solutions for Dilaton Quantum Gravity
- Renormalization Group Flow of the Holst Action
- Frame Covariant Nonminimal Multifield Inflation
- A Universe without expansion
- On Thermalization in Classical Scalar Field Theory
- Phase transitions in spinor quantum gravity on a lattice
- Einstein-Cartan gravity, Asymptotic Safety, and the running Immirzi parameter
- Gravity and Unification: A review
- Spinor Gravity
- Spinors in euclidean field theory, complex structures and discrete symmetries
- Massive Spin-2 fields of Geometric Origin in Curved Spacetimes
- Eternal Universe
- Infrared Modified Gravity with Dynamical Torsion
- Einstein-Cartan gravity, matter, and scale-invariant generalization
- Graviton-Mediated Scattering Amplitudes from the Quantum Effective Action
- Coupling Quintessence to Inflation in Supergravity
- Spacetime and dark matter from spontaneous breaking of Lorentz symmetry
- Cosmon inflation
- On the origin of the difference between time and space
- Quantum correlations for the metric
- Fundamental Scale Invariance
- Primordial cosmic fluctuations for variable gravity
- Cosmic fluctuations from quantum effective action
- A new functional flow equation for Einstein-Cartan quantum gravity
- Pregeometry and euclidean quantum gravity
- Geometry and symmetries in lattice spinor gravity
- Primordial flat frame -- a new view on inflation
- The great emptiness at the beginning of the Universe
- Dynamically emergent gravity from hidden local Lorentz symmetry