We review the role that infinite-dimensional symmetries arising at the boundary of
asymptotically flat spacetimes play in the context of the celestial holography program. Once …

Abstract “Do Carroll particles move?” The answer depends on the characteristics of the
particle such as its mass, spin, electric charge, and magnetic moment. A massive Carroll …

A short, graduate-level synthesis of recent developments in theoretical physics, from a
pioneer in the field Lectures on the Infrared Structure of Gravity and Gauge Theory presents …

We show that a 3D sourced conformal Carrollian field theory has the right kinematic
properties to holographically describe gravity in 4D asymptotically flat spacetime. The …

It has recently been shown that Bondi–van der Burg–Metzner–Sachs supertranslation
symmetries imply an infinite number of conservation laws for all gravitational theories in …

A bstract We study various aspects of the Carroll limit in which the speed of light is sent to
zero. A large part of this paper is devoted to the quantization of Carroll field theories. We …

Gravity in 4 d asymptotically flat spacetime constitutes the archetypal example of a
gravitational system with leaky boundary conditions. Pursuing our previous analysis of …

Carroll symmetry arises from Poincaré symmetry upon taking the limit of vanishing speed of
light. We determine the constraints on the energy-momentum tensor implied by Carroll …

A bstract We consider Carroll-invariant limits of Lorentz-invariant field theories. We show that
just as in the case of electromagnetism, there are two inequivalent limits, one “electric” and …

A bstract We initiate a study of gravity focusing on generic null hypersurfaces, non-
perturbatively in the Newton coupling. We present an off-shell account of the extended …