Quintessential inflation with a trap and axionic dark matter

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Dimopoulos, Konstantinos and Karčiauskas, Mindaugas and Owen, Charlotte (2019) Quintessential inflation with a trap and axionic dark matter. Physical Review D, 100 (8). ISSN 2470-0010

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Official URL: https://doi.org/10.1103/PhysRevD.100.083530



Abstract

We study a new model of quintessential inflation which is inspired by supergravity and string theory. The model features a kinetic pole, which gives rise to the inflationary plateau, and a runaway quintessential tail. We envisage a coupling between the inflaton and the Peccei-Quinn (PQ) field which terminates the roll of the runaway inflaton and traps the latter at an enhanced symmetry point (ESP), thereby breaking the PQ symmetry. The kinetic density of the inflaton is transferred to the newly created thermal bath of the hot big bang due to the decay of PQ particles. The model successfully accounts for the observations of inflation and dark energy with natural values of the model parameters, while also resolving the strong C P problem of QCD and generating axionic dark matter, without isocurvature perturbations. Trapping the inflaton at the ESP ensures that the model does not suffer from the infamous 5th force problem, which typically plagues quintessence.


Item Type:Article
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Physics-Mathematical models
ID Code:74443
Deposited On:22 Sep 2022 13:25
Last Modified:23 Sep 2022 07:30

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