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arXiv · 0707.0535

Measuring a Parity Violation Signature in the Early Universe via Ground-based Laser Interferometers

Naoki Seto·Atsushi Taruya
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Abstract

We show that pairs of widely separated interferometers are advantageous for measuring the Stokes parameter V of a stochastic background of gravitational waves. This parameter characterizes asymmetry of amplitudes of right- and left-handed waves and generation of the asymmetry is closely related to parity violation in the early universe. The advantageous pairs include LIGO(Livingston)-LCGT and AIGO-Virgo that are relatively insensitive to Omega_GW (the simple intensity of the background). Using at least three detectors, information of the intensity Omega_GW and the degree of asymmetry V can be separately measured.

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Naoki Seto, Atsushi Taruya. 2007-07-04. Measuring a Parity Violation Signature in the Early Universe via Ground-based Laser Interferometers. https://doi.org/10.1103/physrevlett.99.121101

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