Low-scale Quintessential Inflation

Details Low-scale Quintessential Inflation Low-scale Quintessential Inflation

2003-01-30

arxiv.org/abs/hep-ph/0301264v1

Phys.Rev. D67 (2003) 123512

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages; 5 figures

Scientific paper

10.1103/PhysRevD.67.123512

In quintessential inflationary model, the same master field that drives inflation becomes, later on, the dynamical source of the (present) accelerated expansion. Quintessential inflationary models require a curvature scale at the end of inflation around $10^{-6}M_{\rm P}$ in order to explain the large scale fluctuations observed in the microwave sky. If the curvature scale at the end of inflation is much smaller than $10^{-6}M_{\rm P}$, the large scale adiabatic mode may be produced thanks to the relaxation of a scalar degree of freedom, which will be generically denoted, according to the recent terminology, as the curvaton field. The production of the adiabatic mode is analysed in detail in the case of the minimal quintessential inflationary model originally proposed by Peebles and Vilenkin.

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