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A Gaussian Process Framework for Testing General Relativity with Gravitational Waves

Lachlan Passenger, Shun Yin Cheung, Nir Guttman, Nikhil Kannachel et al. • The Astrophysical Journal (2025)

Gravitational-wave astronomy provides a promising avenue for the discovery of new physics beyond general relativity as it probes extreme curvature and ultrarelativistic dynamics. However, in the absence of a compelling alternative to genera...

DOAJ Open Access (DOAJ) DOI: 10.3847/1538-4357/ae13b0

Baryogenesis and first-order QCD transition with gravitational waves from a large lepton asymmetry

Fei Gao, Julia Harz, Chandan Hati, Yi Lu et al. • Journal of High Energy Physics (2025)

Abstract A large primordial lepton asymmetry can lead to successful baryogenesis by preventing the restoration of electroweak symmetry at high temperatures, thereby suppressing the sphaleron rate. This asymmetry can also lead to a first-ord...

DOAJ Open Access (DOAJ) DOI: 10.1007/JHEP06(2025)247

Linear and second-order geometry perturbations on spacetimes with torsion

Fernando Izaurieta, Eduardo Rodríguez, Omar Valdivia • European Physical Journal C: Particles and Fields (2019)

Abstract In order to study gravitational waves in any realistic astrophysical scenario, one must consider geometry perturbations up to second order. Here, we present a general technique for studying linear and quadratic perturbations on a s...

DOAJ Open Access (DOAJ) DOI: 10.1140/epjc/s10052-019-6852-y