CERN Accelerating science

Article
Report number	arXiv:2103.06718
Title	Searching for parity violation with the LIGO-Virgo-KAGRA network
Author(s)	Martinovic, Katarina (Royal Holloway, U. of London) ; Badger, Charles (Royal Holloway, U. of London) ; Sakellariadou, Mairi (Royal Holloway, U. of London ; CERN) ; Mandic, Vuk (Minnesota U.)
Publication	2021-10-04
Imprint	2021-03-11
Number of pages	6
Note	6 pages, 5 figures
In:	Phys. Rev. D 104 (2021) L081101
DOI	10.1103/PhysRevD.104.L081101 (publication)
Subject category	hep-ph ; Particle Physics - Phenomenology ; gr-qc ; General Relativity and Cosmology
Abstract	A stochastic gravitational wave background is expected to emerge from the superposition of numerous gravitational wave sources of both astrophysical and cosmological origin. A number of cosmological models can have a parity violation, resulting in the generation of circularly polarised gravitational waves. We present a method to search for parity violation in the gravitational wave data. We first apply this method to the most recent, third, LIGO-Virgo observing run. We then investigate the constraining power of future A+ LIGO-Virgo detectors, including KAGRA to the network, for a gravitational wave background generated by early universe cosmological turbulence.
Copyright/License	preprint: (License: CC-BY-4.0) publication: © 2021-2025 authors (License: CC BY 4.0)

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