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| Paper IPM / P / 11554 |
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| Abstract: | |||||||||
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We consider models of inflation with U(1) gauge fields and charged scalar
fields. This includes symmetry breaking potential, chaotic inflation and
hybrid inflation models. We show that there exist attractor solutions where
the anisotropies produced during inflation becomes comparable to the
slow-roll parameters. In the models where the inflaton field is a charged
scalar field the gauge field becomes highly oscillatory at the end of
inflation ending inflation quickly. Furthermore, in charged hybrid inflation
the onset of waterfall phase transition at the end of inflation is affected
significantly by the evolution of the background gauge field. Rapid
oscillations of the gauge field and its coupling to inflaton can have
interesting effects on preheating and non-Gaussianities.
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