Cosmological magnetic fields from inflation and backreaction

2009/08/31 by Sugumi Kanno, Jiro Soda, Masa-aki Watanabe · 2 citations
Engineering · Physics and Astronomy · #Back-reaction #Cosmology #Cosmology and Gravitation Theories #Field (mathematics) #Inflation (cosmology) #Magnetic field #Mechanism (biology) #Solar and Space Plasma Dynamics #Space Technology and Applications #astro-ph.CO #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1088/1475-7516/2009/12/009

published as JCAP 0912 (2009) 009 · 14 pages, 1 figure, references added

arxiv created 2009/09/04 · openalex publication_date 2009/12/09 · arxiv updated 2014/12/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We study the backreaction problem in a mechanism of magnetogenesis from inflation. In usual analysis, it has been assumed that the backreaction due to electromagnetic fields spoils inflation once it becomes important. However, there exists no justification for this assumption. Hence, we analyze magnetogenesis from inflation by taking into account the backreaction. On the contrary to the naive expectation, we show that inflation still continues even after the backreaction begins to work. Nevertheless, it turns out that creation of primordial magnetic fields is significantly suppressed due to the backreaction.

Citations

• Ellipsoidal Universe Can Solve the Cosmic Microwave Background Quadrupole Problem
• Limit on Primordial Small-Scale Magnetic Fields from Cosmic Microwave Background Distortions
• CMB temperature anisotropy from broken spatial isotropy due to a homogeneous cosmological magnetic field
• Parti sans laisser d'adresse
• Cosmic microwave background statistics for a direction-dependent primordial power spectrum
• Anisotropic inflation from vector impurity
• A Global Probe of Cosmic Magnetic Fields to High Redshifts
• Cosmic microwave background quadrupole and ellipsoidal universe
• Primordial statistical anisotropy generated at the end of inflation
• Anisotropic Bispectrum of Curvature Perturbations from Primordial Non-Abelian Vector Fields
• Magnetogenesis, spectator fields and CMB signatures
• P-nflation: generating cosmic Inflation with p-forms
• Primordial magnetic fields from inflation?
• Statistical anisotropy of the curvature perturbation from vector field perturbations

Cited by

• Generation of scale invariant magnetic fields in bouncing universes
• Anisotropic power-law inflation