Browsing by Author "Alexander, Stephon"
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Item Gravitational-wave mediated preheating(2015-04) Alexander, Stephon; Cormack, Sam; Marcianò, Antonino; Yunes, NicolásWe propose a new preheating mechanism through the coupling of the gravitational field to both the inflaton and matter fields, without direct inflaton-matter couplings. The inflaton transfers power to the matter fields through interactions with gravitational waves, which are exponentially enhanced due to an inflation-graviton coupling. One such coupling is the product of the inflaton to the Pontryagin density, as in dynamical Chern-Simons gravity. The energy scales involved are constrained by requiring that preheating happens fast during matter domination