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Gravitational wave production through decay of the inflaton into intermediary fields during slow roll inflation
This dissertation looks for possible observable signals of tensor metric perturbations sourced during slow roll inflation from decay of the inflaton field into other intermediary fields. We focus on two main scenarios, one of explosive production of intermediary fields for a short period during inflation and another of prolonged production of vectors due to a derivative coupling of the vectors with the inflaton field. We only find a possible observable signal of tensor perturbations in the second case.
Cook, Jessica L, "Gravitational wave production through decay of the inflaton into intermediary fields during slow roll inflation" (2013). Doctoral Dissertations Available from Proquest. AAI3603071.