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RESEARCH PRODUCT
Dynamical analysis of anisotropic inflation
Mindaugas KarciauskasMindaugas Karciauskassubject
Nuclear and High Energy PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Dynamical systems theoryFOS: Physical sciencesGeneral Physics and AstronomyGeneral Relativity and Quantum Cosmology (gr-qc)Fixed point01 natural sciencesGeneral Relativity and Quantum CosmologyGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenology (hep-ph)anisotropic Bianchi cosmologies0103 physical sciencesAttractorBoundary value probleminflation010306 general physicsInflation (cosmology)Physicsta114010308 nuclear & particles physicsAstronomy and Astrophysicsdynamical systemsInflatonHigh Energy Physics - PhenomenologyClassical mechanicsPhase spaceVector fieldvector fieldsAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
Inflaton coupling to a vector field via the $f^2(\phi)F_{\mu\nu}F^{\mu\nu}$ term is used in several contexts in the literature, such as to generate primordial magnetic fields, to produce statistically anisotropic curvature perturbation, to support anisotropic inflation and to circumvent the $\eta$-problem. Here, I perform dynamical analysis of such a system allowing for most general Bianchi I initial conditions. I also confirm the stability of attractor equilibrium points in phase-space directions that had not been investigated before.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 | Modern Physics Letters A |