A New Probe of Gravitational Parity Violation Through (Non-) Observation of the Stochastic Gravitational-Wave Background

T Callister, L Jenks, D Holz, N Yunes - arXiv preprint arXiv:2312.12532, 2023 - arxiv.org
Parity violation in the gravitational sector is a prediction of many theories beyond general
relativity. In the propagation of gravitational waves, parity violation manifests by inducing …

Parity-breaking galaxy 4-point function from lensing by chiral gravitational waves

K Inomata, L Jenks, M Kamionkowski - arXiv preprint arXiv:2408.03994, 2024 - arxiv.org
Recent searches for parity breaking in the galaxy four-point correlation function, as well as
the prospects for greatly improved sensitivity to parity breaking in forthcoming surveys …

Gravitational Wave Birefringence from Fuzzy Dark Matter

D Huang, ZX Xiong - arXiv preprint arXiv:2406.13394, 2024 - arxiv.org
Gravitational wave (GW) birefringence is a remarkable phenomenon that can be used to test
the parity violation in gravity. By coupling the fuzzy dark matter (FDM) scalar to the …

Gravitational Wave Birefringence in Symmetron Cosmology

ZX Xiong, D Huang - arXiv preprint arXiv:2409.09382, 2024 - arxiv.org
The symmetron is a light scalar which provides a screening mechanism so as to evade the
strong constraints from local gravity tests. In order to achieve this goal, a $ Z_2 $ symmetry is …