Cosmic Microwave Background Dipole induced by double inflation

Details Cosmic Microwave Background Dipole induced by double inflation Cosmic Microwave Background Dipole induced by double inflation

1996-06-23

arxiv.org/abs/gr-qc/9606066v1

Phys.Rev.D54:2447-2450,1996

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Latex, 9 pages, no figure, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.54.2447

The observed CMBR dipole is generally interpreted as the consequence of the peculiar motion of the Sun with respect to the reference frame of the CMBR. This article proposes an alternative interpretation in which the observed dipole is the result of isocurvature perturbations on scales larger than the present Hubble radius. These perturbations are produced in the simplest model of double inflation, depending on three parameters. The observed dipole and quadrupole can be explained in this model, while severely constraining its parameters.

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