Stringy constraints on primordial electromagnetic fields in axion inflation

Abstract

We study primordial electromagnetic fields in effective actions of string theory. In contrast to a conventional scenario of producing primordial electromagnetic fields induced by the axion inflation, we deal with the Dirac-Born-Infeld action as a non-linear generation of Maxwell theory. It turns out that the intensity of generated electromagnetic fields is bounded from above by the string scale which can also be rewritten in terms of supersymmetry breaking scale in the context of type IIB Large Volume Scenario. The instability parameter $\xi$ is constrained by the tadpole cancellation condition of D3-branes and a realization of hierarchy between the string scale and the Hubble scale of inflation. Hence, the magnetogenesis can be realized in the limited corner of the string landscape due to the $\mathcal{O}(1)$ value of the coefficient of Chern-Simons coupling.

29 pages, v2: published version

References in corpus (22)

• Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
• N-flationary magnetic fields
• GUTs in Type IIB Orientifold Compactifications
• Consistent generation of magnetic fields in axion inflation models
• Baryogenesis from Decaying Magnetic Helicity
• Evolution of the Baryon Asymmetry through the Electroweak Crossover in the Presence of a Helical Magnetic Field
• Baryon Asymmetry and Gravitational Waves from Pseudoscalar Inflation
• Chiral Anomaly, Schwinger Effect, Euler-Heisenberg Lagrangian, and application to axion inflation
• Sequestered de Sitter String Scenarios: Soft-terms
• Chiral effects in astrophysics and cosmology
• Conifold Vacua with Small Flux Superpotential
• Global Orientifolded Quivers with Inflation
• Baryon asymmetry from hypermagnetic helicity in dilaton hypercharge electromagnetism
• The Standard Model Quiver in de Sitter String Compactifications
• Small Flux Superpotentials for Type IIB Flux Vacua Close to a Conifold
• Axion inflation in the strong-backreaction regime: decay of the Anber-Sorbo solution
• Effective treatment of U(1) gauge field and charged particles in axion inflation
• Small flux superpotential in F-theory compactifications
• On the Flux Vacua in F-theory Compactifications
• Natural Inflation from Near Alignment in Heterotic String Theory
• Generalized chiral instabilities, linking numbers, and non-invertible symmetries
• Axion decay constants at special points in type II string theory

Cited by in corpus (1)

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