Warm inflation with boundary terms in a nonmetric Weyltype geometry
Abstract
We consider the effects that emerge in the warm inflationary scenario in the presence of the boundary terms in the Einstein gravitational field equations. We assume that the boundary contribution can be described in a nonmetric, Weyltype geometry. The dissipative scalar field, whose evolution is obtained from a variational principle, is considered, together with the Weyl vector, as the source of the radiation and matter in the early Universe. Cosmological dynamics is studied by using the generalized Friedmann equations in the presence of nonmetricity, and the balance equations for radiation and matter, respectively. The solutions of the cosmological evolution equations are obtained numerically, and they show that matter creation determines the transition from an accelerating inflationary phase to a decelerating one, with the Weyl vector playing an important role in this process.
 Publication:

7th International Conference in Astronomy
 Pub Date:
 July 2023
 Bibcode:
 2023aasp.confE..16M