Optical scalars and deflection angle in terms of curvature scalars at second order

GABRIEL CRISNEJO; EMANUEL GALLO

SAO PAULO

Conferencia; IV CosmoSul ? Cosmology and Gravitation in the Southern Cone; 2017

ICTP South American Institute for Fundamental Research

We present explicit expressions for optical scalar and deflection angle for weak gravitational lensing at second order in the perturbation of flat spacetimes by using the spin-coefficient method. We give explicit expressions for convergence, shear and rotation and compare them with some of the expressions found in the literature