Late time tails and nonlinear memories in asymptotically de Sitter spacetimes

Effect of small cosmological constant on electromagnetic memory effect

“…Incorporating the effect of de Sitter background perturbatively, we obtain the first order correction to the late time electromagnetic radiation which in turn is responsible for corrections to the flat spacetime electromagnetic memory effect. Gravitational memory effects have been investigated in de Sitter spacetime [25][26][27][28][29]. Similar questions have been investigated in the context of Anti de Sitter spacetime in [30,31] for the special case of classical radiation emitted in probe scatterer approximation.…”