Deformed general relativity and scalar-tensor models
arXiv:1806.06791 · doi:10.1088/1361-6382/aae442
Abstract
We calculate the most general action for a scalar-tensor model up to quadratic order in derivatives with deformed general covariance and non-minimal coupling. We demonstrate how different choices of the free functions recover specific well known scalar-tensor models. We look at the cosmological dynamics and find the general conditions for either inflation or a big bounce. Using this we present a novel non-minimally coupled scalar model which produces a bounce, and describe how to find similar models.
arXiv comment20 pages, 4 figures, authors' accepted manuscript
References in corpus (20)
- Loop Quantum Cosmology: A Status Report
- Avoiding Dark Energy with 1/R Modifications of Gravity
- Anomaly-free scalar perturbations with holonomy corrections in loop quantum cosmology
- Cosmology from Group Field Theory Formalism for Quantum Gravity
- Deformed General Relativity and Effective Actions from Loop Quantum Gravity
- Hamiltonian formulation of f(Riemann) theories of gravity
- Hypersurface-deformation algebroids and effective space-time models
- Deformed General Relativity
- Spacetime-noncommutativity regime of Loop Quantum Gravity
- Various Hamiltonian formulations of f(R) gravity and their canonical relationships
- Quantum Reduced Loop Gravity and the foundation of Loop Quantum Cosmology
- Spherically symmetric sector of self dual Ashtekar gravity coupled to matter: Anomaly-free algebra of constraints with holonomy corrections
- Signature change in 2-dimensional black-hole models of loop quantum gravity
- Non-Minimal Inflation Revisited
- Signature change in loop quantum gravity: General midisuperspace models and dilaton gravity
- Linking loop quantum gravity quantization ambiguities with phenomenology
- Deformed symmetries in noncommutative and multifractional spacetimes
- Spectral dimension with deformed spacetime signature
- Extending general covariance: Moyal-type noncommutative manifolds
- Fourth order deformed general relativity