Primordial Gravitational Waves and Cosmology

Details Primordial Gravitational Waves and Cosmology Primordial Gravitational Waves and Cosmology

2010-04-14

arxiv.org/abs/1004.2504v1

Science 328:989-992,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

12 pages. 4 figures

Scientific paper

10.1126/science.1179541

The observation of primordial gravitational waves could provide a new and unique window on the earliest moments in the history of the universe, and on possible new physics at energies many orders of magnitude beyond those accessible at particle accelerators. Such waves might be detectable soon in current or planned satellite experiments that will probe for characteristic imprints in the polarization of the cosmic microwave background (CMB), or later with direct space-based interferometers. A positive detection could provide definitive evidence for Inflation in the early universe, and would constrain new physics from the Grand Unification scale to the Planck scale.

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