COBE, Inflation, and Light Scalars

Details COBE, Inflation, and Light Scalars COBE, Inflation, and Light Scalars

1992-07-16

arxiv.org/abs/hep-ph/9207243v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, no figs

Scientific paper

Comparison of theobservedanisotropy with that predicted iadiabaticDM models suggest that much of thserved signal may be due to long wavelenh gravitational waves. In inflationary models this requires the generation of tensor fluctuations to be at least comparable to scalar density fltuations. This i is feasible, but depends sensitively on the inflaton potential. Alternatively, isocurvature quantum fluctuations in an axion-like field could produce a quadrupole anisotropy proportional to the gravitational wave anisotropy,k independent of the inflaton potential. These could also produce large scale structure with more power on larger scales than their adiabatic counterparts.

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