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arXiv · hep-th/0509032

DBI with Primordial Magnetic Field in the Sky

Mohammad A. Ganjali
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Abstract

In this paper, we study the generation of a large scale magnetic field with amplitude of order $μ$G in an inflationary model which has been introduced in hep-th/0310221. This inflationary model based on existence of a speed limit for inflaton field. Generating a mass for inflaton at scale above the $ϕ_{IR}$, breaks the conformal triviality of the Maxwell equation and causes to originate a magnetic field during the inflation. The amplitude strongly depends on the details of reheating stage and also depends on the e-foldings parameter N. We find the amplitude of the primordial magnetic field at decoupling time in this inflationary background using late time behavior of the theory.

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Mohammad A. Ganjali. 2005-09-06. DBI with Primordial Magnetic Field in the Sky. https://doi.org/10.1088/1126-6708%2F2005%2F09%2F004

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