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hep-th2018
Infrared resummation for derivative interactions in de Sitter space
Hiroyuki Kitamoto
In de Sitter space, scale invariant fluctuations give rise to infrared logarithmic corrections to physical quantities, which eventually spoil perturbation theories. For models with…
hep-th2018
Schwinger Effect in Inflaton-Driven Electric Field
Hiroyuki Kitamoto
In a four dimensional inflation theory, a persistent electric field can be established by making the inflaton coupled to the gauge field like a dilaton. We investigate the pair pro…