Speaker
Marcello Ortaggio
(Institute of Mathematics of the Czech Academy of Sciences)
Description
Certain classes of Einstein spacetimes are known to be "immune" to higher-order corrections, i.e., they are simultaneous solutions of (virtually) any modification of Einstein's gravity in vacuum. In this talk we report on recent progress for the case of Einstein-Maxwell solutions, for which one has to consider also the backreaction of the electromagnetic field as well as corrections to the Maxwell equations. After giving a characterization of (at least some) universal Einstein-Maxwell solutions, we exemplify the obtained results in the case of particular theories such as ModMax or Horndeski electrodynamics coupled to Einstein gravity.
Primary author
Marcello Ortaggio
(Institute of Mathematics of the Czech Academy of Sciences)
