Cosmological scenarios in modified gravity with non-dynamical fields
arXiv:1405.7952 · doi:10.1103/PhysRevD.90.043523
Abstract
In this paper we address the issue of exploring some cosmological scenarios in modified Einstein gravity through non-dynamical (auxiliary) fields. We found that all scenarios are controlled by a specific parameter associated with an auxiliary field. We explore the emergence of inflationary, radiation, matter and dark energy dominated regimes. Furthermore, an interesting possibility such as the emergence of a self-tuning mechanism to the cosmological constant problem in the radiation dominated era is also discussed.
7 pages, no figure; version to appear in PRD
References in corpus (17)
- f(R) Theories Of Gravity
- Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
- f(R) theories
- The Confrontation between General Relativity and Experiment
- Eddington's theory of gravity and its progeny
- A Small Cosmological Constant from a Large Extra Dimension
- Self-tuning flat domain walls in 5d gravity and string theory
- New insights on the matter-gravity coupling paradigm
- Dark energy from modified gravity with Lagrange multipliers
- Bounds on curved domain walls in 5d gravity
- Physics at the surface of a star in Eddington-inspired Born-Infeld gravity
- Cyclic cosmology from Lagrange-multiplier modified gravity
- Gauss-Bonnet dark energy by Lagrange multipliers
- Gravity with Auxiliary Fields
- Can we live in a self-tuning universe?
- Black holes in five-dimensional Palatini gravity and implications for the AdS/CFT correspondence
- Braneworld solutions from scalar field in bimetric theory
Cited by in corpus (6)
- Thick brane models in generalized theories of gravity
- Born-Infeld- gravity
- Late Time Cosmological Evolution in f(R) theories with Ordinary and Collisional Matter
- New braneworld models in the presence of auxiliary fields
- First-order framework for flat brane with auxiliary fields
- Stability in higher-derivative matter fields theories