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Aspects of higher spin symmetry in flat space
We review some aspects of higher spin symmetry, in (Anti-)de Sitter and flat space–times, aiming at closing the gap between the constantly curved and...
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Scale invariant Einstein-Cartan gravity and flat space conformal symmetry
We find the conditions under which scale-invariant Einstein-Cartan gravity with scalar matter fields leads to an approximate conformal invariance of...
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An embedding space approach to Carrollian CFT correlators for flat space holography
Carrollian conformal field theories (carrollian CFTs) are natural field theories on null infinity of an asymptotically flat spacetime or, more...
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Fully nonlinear transformations of the Weyl-Bondi-Metzner-Sachs asymptotic symmetry group
The asymptotic symmetry group of general relativity in asymptotically flat spacetimes can be extended from the Bondi-Metzner-Sachs (BMS) group to the...
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Towards higher-spin holography in flat space
We study the chiral flat space higher-spin algebra, which is the global symmetry algebra of the chiral higher-spin theory in the 4d Minkowski space....
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A solvable model of flat space holography
We propose an explicit realization of flat space holography in two dimensions where both sides of the duality are independently defined and the...
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A generalized Selberg zeta function for flat space cosmologies
Flat space cosmologies (FSCs) are time dependent solutions of three-dimensional (3D) gravity with a vanishing cosmological constant. They can be...
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A Matrix Model for Flat Space Quantum Gravity
We take a step towards the non-perturbative description of a two-dimensional dilaton-gravity theory which has a vanishing cosmological constant and...
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Asymptotic symmetry of four dimensional Einstein-Yang-Mills and Einstein-Maxwell theory
Asymptotic symmetry plays an important role in determining physical observables of a theory. Recently, in the context of four dimensional...
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Kac-Moody symmetry in the light front of gauge theories
We discuss the emergence of a new symmetry generator in a Hamiltonian realisation of four-dimensional gauge theories in the flat space foliated by...
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Lorentz symmetry and IR structure of the BFSS matrix model
The BFSS matrix model relates flat space M-theory to a large N limit of matrix quantum mechanics describing N non-relativistic D0-branes. M-theory,...
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Twisting asymptotic symmetries and algebraically special vacuum solutions
In this paper, we study asymptotic symmetries and algebraically special exact solutions in the Newman-Penrose formalism. Removing the hypersurface...
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Chiral higher-spin holography in flat space: the Flato-Fronsdal theorem and lower-point functions
We prove the flat space analogue of the Flato-Fronsdal theorem. It features the flat space singleton representation suggested recently. We do that by...
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BRST BMS4 symmetry and its cocycles from horizontality conditions
The BRST structure of the extended Bondi-Metzner-Sachs symmetry group of asymptotically flat manifolds is investigated using the recently introduced...
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Hietarinta Chern–Simons supergravity and its asymptotic structure
In this paper we present the Hietarinta Chern–Simons supergravity theory in three space-time dimensions which extends the simplest Poincaré...
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Dynamical particles in spatially flat FLRW space-times
Metrics of dynamical point particles embedded in spatially flat FLRW space-times are derived as isotropic solutions of the Einstein equations with...
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Asymptotic symmetries and memories of gauge theories in FLRW spacetimes
In this paper, we investigate the asymptotic structure of gauge theories in decelerating and spatially flat Friedmann-Lemaître-Robertson-Walker...
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Particle realization of Bondi-Metzner-Sachs symmetry in 2 + 1 space-time
We construct a Lorentz invariant massive particle model in (2+1) space-time with an enlarged set of symmetries which includes Bondi-Metzner-Sachs...
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Antisymmetric tensor field and Cheshire Cat smile of the local conformal symmetry
The conformal version of the antisymmetric second-order tensor field in four spacetime dimensions does not have gauge invariance extensively...