This thesis presents the state of the art in the study of Bondi-Metzner-Sachs (BMS) symmetry
and its applications in the simplified setting of three dimensions. It focuses on presenting all …

A bstract We revisit the construction of the tensionless limit of closed bosonic string theory in
the covariant formulation in the light of Galilean conformal symmetry that rises as the …

We build unitary representations of the BMS algebra and its higher-spin extensions in three
dimensions, using induced representations as a guide. Our prescription naturally emerges …

A bstract In this paper, we present novel and known non-relativistic and ultra-relativistic spin-
3 algebras, by considering the Lie algebra expansion method. We start by applying the …

A bstract We consider two possible flat space limits of three dimensional\(\mathcal {N}=\left
(1,\1\right)\) AdS supergravity. They differ by how the supercharges are scaled with the AdS …

A bstract We initiate the study of non-and ultra-relativistic higher spin theories. For sake of
simplicity we focus on the spin-3 case in three dimensions. We classify all kinematical …

A bstract In this paper we investigate spectral flow symmetry in asymptotically flat
spacetimes both from a gravity as well as a putative dual quantum field theory perspective …

A bstract We present the construction of BMS 3 blocks in a two-dimensional field theory and
compare the results with holographic computations involving probe particles propagating in …

A bstract We evaluate one-loop partition functions of higher-spin fields in thermal flat space
with angular potentials; this computation is performed in arbitrary space-time dimension, and …

In this work we construct a novel associative algebra and use it to define a theory of higher-
spin gravity in (2+ 1)-dimensional asymptotically flat spacetimes. Our construction is based …