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gr-qc2026
Matter density perturbations in Quadratic Gravity
Pedro Bessa
We investigate linear matter-density perturbations in full quadratic gravity. Working in the longitudinal gauge and adopting the sub-horizon and quasi-static approximations, we obt…
gr-qc2023★ 7 cited
Strong Gravitational Lensing in Horndeski theory
Pedro Bessa
In this paper we build the general formalism of gravitational lensing in luminal Horndeski theories, deriving the Jacobi matrix equation and the general angular diameter distance i…