We study exponentiated soft exchange in (d+ 2)-dimensional gauge and gravitational
theories using the celestial conformal field theory formalism. These models exhibit …

A bstract We consider the consequences of the dual gravitational charges for the phase
space of radiating modes, and find that they imply a new soft NUT theorem. In particular, we …

A bstract We study the renormalized action and the renormalized presymplectic potential for
Maxwell fields on Anti de Sitter backgrounds of any dimensions. We then use these results …

A bstract We perform a complete and systematic analysis of the solution space of six-
dimensional Einstein gravity. We show that a particular subclass of solutions—those that are …

A bstract Motivated by Campiglia and Laddha [1], we show that the Sahoo-Sen soft photon
theorem [2] for loop amplitudes is equivalent to an asymptotic conservation law. This …

We explore memory effects associated with both Abelian and non-Abelian radiation getting
to null infinity, in arbitrary even spacetime dimensions. Together with classical memories …

Using the covariant phase space formalism, we construct the phase space for non-Abelian
gauge theories in (d+ 2)-dimensional Minkowski spacetime for any d≥ 2, including the edge …

Soft theorems in gauge theory and gravity encode the universal properties of scattering
amplitudes as the zero frequency limit of one or more external states is approached. When …

Motivated by connections with observable phenomena, in particular with soft factorization
theorems for scattering amplitudes and with memory effects, renewed interest has been …

In the first part of this thesis we perform a complete and systematic analysis of the solution
space of six-dimensional Einstein gravity. We show that a particular subclass of solutions …