CMBR dipole from ultra large scale isocurvature perturbations

Details CMBR dipole from ultra large scale isocurvature perturbations CMBR dipole from ultra large scale isocurvature perturbations

1996-11-13

arxiv.org/abs/gr-qc/9611036v1

Helv.Phys.Acta 69 (1996) 229-232

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, Latex, macro hpatex.sty, to appear in the Proceedings of the "Journees relativistes 1996" in Helv. Phys. Acta

Scientific paper

The observed CMBR dipole, generally interpreted as the consequence of the peculiar motion of the Sun with respect to the reference frame of the CMBR, can also be explained by the presence of ultra large scale (of the order of $100H_0^{-1}$) isocurvature perturbations. Moreover, the simplest model of inflation with several scalar fields, namely that of double inflation, with appropriate parameters, can produce such perturbations.

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