Nonlinear hidden symmetries in General Relativity and String Theory: a matrix generalization of the Ernst potentials

Nandinii Barbosa-Cendejas, Alfredo Herrera-Aguilar, Konstantinos Kanakoglou +1

In this paper we recall a simple formulation of the stationary electrovacuum theory in terms of the famous complex Ernst potentials, a pair of functions which allows one to generat…