Is inflationary magnetogenesis sensitive to the postinflationary history?
Considering inflationary magnetogenesis induced by time-dependent kinetic and axial couplings of a massless Abelian vector boson field breaking the conformal invariance, we show in this article that, surprisingly, the spectral shape of the large-scale primordial magnetic field power spectrum is insensitive to the postinflationary history, namely, the barotropic parameter (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mi>w</a:mi></a:mrow></a:math>) and the gauge coupling functions of the postinflationary era.
Authors
- Konstantinos Dimopoulos (ORCID: https://orcid.org/0000-0002-1704-1111)
- Theodoros Papanikolaou (ORCID: https://orcid.org/0000-0001-8759-5411)
- Anish Ghoshal (ORCID: https://orcid.org/0000-0001-7045-302X)
Institutions
- Istituto Nazionale di Fisica Nucleare (IT)
- National Observatory of Athens (GR)
- Scuola Superiore Meridionale (IT)
- University of Warsaw (PL)
- Lancaster University (GB)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2025-04-29
- DOI
- https://doi.org/10.1103/physrevd.111.083550
- Citations
- 4
- Primary Topic
- Solar and Space Plasma Dynamics
- Type
- article
- Field-Weighted Citation Impact
- 4.62
Funders
- Foundation for Education and European Culture
- Science and Technology Facilities Council
- Instituto Nazionale di Fisica Nucleare