On the validity of cosmic no-hair conjecture in an anisotropic inflationary model
arXiv:1806.00219 · doi:10.1088/1742-6596/1034/1/012001
Abstract
We will present main results of our recent investigations on the validity of cosmic no-hair conjecture proposed by Hawking and his colleagues long time ago in the framework of an anisotropic inflationary model proposed by Kanno, Soda, and Watanabe. As a result, we will show that the cosmic no-hair conjecture seems to be generally violated in the Kanno-Soda-Watanabe model for both canonical and non-canonical scalar fields due to the existence of a non-trivial coupling term between scalar and electromagnetic fields. However, we will also show that the validity of the cosmic no-hair conjecture will be ensured once a unusual scalar field called the phantom field, whose kinetic energy term is negative definite, is introduced into the Kanno-Soda-Watanabe model.
arXiv comment10 pages, 3 figures. Invited talk at the 42nd National Conference on Theoretical Physics (NCTP) of Vietnam, Can Tho, Vietnam, 31 July - 3 August, 2017
References in corpus (26)
- Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
- A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
- Covariant Galileon
- DBI in the Sky
- Quintom Cosmology: Theoretical implications and observations
- Scalar Speed Limits and Cosmology: Acceleration from D-cceleration
- Generalized Galileons: All scalar models whose curved background extensions maintain second-order field equations and stress tensors
- Planck 2013 results. XXIII. Isotropy and statistics of the CMB
- G-inflation: inflation driven by the Galileon field
- Planck 2018 results. VII. Isotropy and Statistics of the CMB
- Planck 2015 results. XVI. Isotropy and statistics of the CMB
- Inflationary Universe with Anisotropic Hair
- Gauge Fields and Inflation
- Statistical Anisotropy from Anisotropic Inflation
- Predictions from an anisotropic inflationary era
- Anisotropic Power-law Inflation
- Inflation and primordial non-Gaussianities of "generalized Galileons"
- Planck 2013 results. XXVI. Background geometry and topology of the Universe
- Planck 2015 results. XVIII. Background geometry & topology
- Inhomogeneous Anisotropic Cosmology
- Cosmic Equilibration: A Holographic No-Hair Theorem from the Generalized Second Law
- Supersymmetric DBI inflation
- Anisotropic power-law inflation in a two-scalar-field model with a mixed kinetic term
- Anisotropic Power-law Inflation: A counter example to the cosmic no-hair conjecture