Slow-roll inflation in f(R,T) gravity and a modified Starobinsky-like inflationary model

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dc.article.number100768
dc.catalogadorgjm
dc.contributor.authorGamonal San Martín, Mauricio
dc.date.accessioned2023-05-19T20:24:58Z
dc.date.available2023-05-19T20:24:58Z
dc.date.issued2021
dc.description.abstractIn this work, we studied the slow-roll approximation of cosmic inflation within the context of f (R,T) gravity, where R is the scalar curvature, and T is the trace of the energy-momentum tensor. By choosing a minimal coupling between matter and gravity, we obtained the modified slow-roll parameters, the scalar spectral index (n(s)), the tensor spectral index (n(T)), and the tensor-to-scalar ratio (r). We computed these quantities for a general power-law potential, Natural & Quartic Hilltop inflation, and the Starobinsky model, plotting the trajectories on the (n(s), r) plane. We found that one of the parameters of Natural/Hilltop models is non-trivially modified. Besides, if the coupling is in the interval -0.5 < alpha < 5.54, we concluded that the Starobinsky-like model predictions are in good agreement with the last Planck measurement, but with the advantage of allowing a wide range of admissible values for r and nT.
dc.fechaingreso.objetodigital2023-07-14
dc.format.extent10 páginas
dc.fuente.origenORCID
dc.identifier.doi10.1016/j.dark.2020.100768
dc.identifier.eissn2212-6864
dc.identifier.scopusids2.0-85098971152
dc.identifier.urihttps://doi.org/10.1016/j.dark.2020.100768
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/67221
dc.information.autorucInstituto de Física; Gamonal San Martín, Mauricio; 0000-0002-0677-4926; 232200
dc.language.isoen
dc.nota.accesoContenido completo
dc.revistaPhysics of the Dark Universe
dc.rightsacceso abierto
dc.subjectModified gravityes_ES
dc.subjectInflationes_ES
dc.subjectSlow-rolles_ES
dc.subjectStarobinskyes_ES
dc.subject.ddc510
dc.subject.deweyMatemática física y químicaes_ES
dc.titleSlow-roll inflation in f(R,T) gravity and a modified Starobinsky-like inflationary modeles_ES
dc.typeartículo
dc.volumen31
sipa.codpersvinculados232200
sipa.indexScopus
sipa.trazabilidadORCID;14-07-2023
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