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Cosmological 'seed' magnetic field from inflation
Abstract
The scalar-field-inflation-modified hot big bang model (Ratra and Peebles, 1988; Ratra, 1989) is extended by adding an inflation epoch coupling term between the scalar field Phi responsible for inflation and an Abelian gauge field A(mu). It is shown that the inflation based mechanism can generate a present intergalactic magnetic field that might be as large as about 10 exp -10 G. This is an example of a primeval seed magnetic field, which might be amplified by anisotropic protogalactic collapse and galactic differential rotation to produce the present galactic magnetic fields. The paper describes the model and the derivation of the magnetic-field two-point correlation function.
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Citations
Cited by
Astrophysical magnetic fields and nonlinear dynamo theory
Brandenburg, A., & Subramanian, K. (2005) · Physics Reports · doi:10.1016/j.physrep.2005.06.005 · Cited by 1,640
The pre-big bang scenario in string cosmology
Gasperini, M., & Veneziano, G. (2003) · Physics Reports · doi:10.1016/s0370-1573(02)00389-7 · Cited by 872
Lidsey, J. E., Wands, D., & Copeland, E. J. (2000) · Physics Reports · doi:10.1016/s0370-1573(00)00064-8 · Cited by 480
Cosmological Magnetic Field Limits in an Inhomogeneous Universe
Blasi, P., Burles, S., & Olinto, A. V. (1999) · The Astrophysical Journal · doi:10.1086/311958 · Cited by 263
Primordial power spectra from anisotropic inflation
Dulaney, T. R., & Gresham, M. I. (2010) · Physical Review D · doi:10.1103/physrevd.81.103532 · Cited by 140
Metadata
- Authors
- Ratra, B.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1992-05
- Volume
- 391
- Pages
- L1
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2022022896
- Cited by
- 736
- References
- 0
- FWCI
- 13.76
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Cosmological 'seed' magnetic field from inflation. https://app.cochat.ai/papers/10.1086/186384
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- Ratra, B. (1992). Cosmological 'seed' magnetic field from inflation. The Astrophysical Journal. https://doi.org/10.1086/186384
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
