RT Journal Article
T1 Constraining the general oscillatory inflaton potential with freeze-indark matter and gravitational waves
A1 Ruiz Cembranos, José Alberto
A1 Karciauskas, Mindaugas
AB The reheating phase after inflation is one of the least observationally constrained epochs in the evolution of the Universe. The forthcoming gravitational wave observatories will enable us to constrain at least some of the non-standard scenarios. For example, models where the radiation bath is produced by the perturbative inflaton decay that oscillates around a minimum of the potential of the form V proportional to phi(2n) , with n > 2 . In such scenarios a part of the inflationary gravitational wave spectrum becomes blue tilted, making it observable, depending on the inflation energy scale and the reheating temperature. The degeneracy between the latter two parameters can be broken if dark matter in the Universe is produced via the freeze-in mechanism. The combination of the independent measurement of dark matter mass with gravitational wave observations makes it possible to constrain the reheating temperature and the energy scale at the end of inflation, at least within some parameter ranges.
PB IOP Publishing
YR 2024
FD 2024-08-01
LK https://hdl.handle.net/20.500.14352/111252
UL https://hdl.handle.net/20.500.14352/111252
LA eng
NO Jose A.R. Cembranos and Mindaugas Karčiauskas JCAP08(2024)051
NO Ministerio de Ciencia e Innovación (España)
NO Agencia Estatal de Investigación (España)
NO European Commission
DS Docta Complutense
RD 7 abr 2025