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 …

Recent attempts at the construction of holography for asymptotically flat spacetime have
taken two different routes. Celestial holography, involving a two dimensional (2D) conformal …

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 …

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 …

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 …

We review both the kinematics and dynamics of non-lorentzian theories and their associated
geometries. First, we introduce non-lorentzian kinematical spacetimes and their symmetry …

A bstract The isomorphism between the (extended) BMS 4 algebra and the 1+ 2D Carrollian
conformal algebra hints towards a co-dimension one formalism of flat holography with the …

A bstract Carrollian Conformal Field Theories (CFTs) have been proposed as co-dimension
one holographic duals to asymptotically flat spacetimes as opposed to Celestial CFTs which …

A bstract We compare and contrast the two approaches of holography in asymptotically flat
spacetimes, viz. the co-dimension two Celestial approach based on the Mellin …