The New Cosmology: Mid-term Report Card for Inflation

Details The New Cosmology: Mid-term Report Card for Inflation The New Cosmology: Mid-term Report Card for Inflation

2002-12-11

arxiv.org/abs/astro-ph/0212281v1

AnnalesHenriPoincare4:S333-S346,2003

Astronomy and Astrophysics

Astrophysics

20 pages LaTeX. To appear in a special issue of the journal Annales Henri Poincare (2003), edited by V. Rivasseau. Proceedings

Scientific paper

10.1007/s00023-003-0926-x

Inflation has been the driving idea in cosmology for two decades and is a pillar of the New Cosmology. The inflationary paradigm has now passed its first round of significant tests, with two of its three basics predictions confirmed at about the 10% level. The Inflationary Paradigm has some of the truth. Over the next decade the precision of these tests, most of which involve measurements of CMB anisotropy and polarization, will improve 30 fold or more(!), testing inflation more sharply and possibly elucidating the underlying cause. Especially important in this regard is detecting the inflation-produced gravitational waves, either directly or through their CMB polarization signature. While inflation has by no means been verified, its successes have raised the bar for competitor theories: Any alternative must feature the two hallmarks of inflation: superluminal expansion and entropy production.

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