Constraints on primordial density perturbations from induced gravitational waves

Details Constraints on primordial density perturbations from induced gravitational waves Constraints on primordial density perturbations from induced gravitational waves

2009-07-23

arxiv.org/abs/0907.4073v3

Phys.Rev.D81:023527,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Version to appear in Phys Rev D

Scientific paper

10.1103/PhysRevD.81.023527

We consider the stochastic background of gravitational waves produced during the radiation-dominated hot big bang as a constraint on the primordial density perturbation on comoving length scales much smaller than those directly probed by the cosmic microwave background or large-scale structure. We place weak upper bounds on the primordial density perturbation from current data. Future detectors such as BBO and DECIGO will place much stronger constraints on the primordial density perturbation on small scales.

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