Measuring the net circular polarization of the stochastic gravitational wave background with interferometers
Valerie Domcke, J. García-Bellido, Marco Peloso, Mauro Pieroni, Angelo Ricciardone, Lorenzo Sorbo, Gianmassimo Tasinato
Abstract
Parity violating interactions in the early Universe can source a stochastic gravitational wave background (SGWB) with a net circular polarization. In this paper, we study possible ways to search for circular polarization of the SGWB with interferometers. Planar detectors are unable to measure the net circular polarization of an isotropic SGWB. We discuss the possibility of using the dipolar anisotropy kinematically induced by the motion of the solar system with respect to the cosmic reference frame to measure the net circular polarization of the SGWB with planar detectors. We apply this approach to LISA, re-assessing
Topics & Concepts
PhysicsGravitational wavePolarization (electrochemistry)Einstein TelescopeGravitational wave backgroundCircular polarizationOpticsAstronomical interferometerDetectorComputational physicsInterferometryAstrophysicsMicrostripPhysical chemistryChemistryPulsars and Gravitational Waves ResearchCosmology and Gravitation TheoriesGeophysics and Gravity Measurements