Massless Scalars and Higher-Spin BMS in Any Dimension - Archive ouverte HAL Access content directly
Journal Articles Journal of High Energy Physics Year : 2022

Massless Scalars and Higher-Spin BMS in Any Dimension

Abstract

Starting from the asymptotic kinematics of massless scalar fields near null infinity in any spacetime dimension, we build two higher-spin extensions of the Carrollian definition of the BMS group and its generalisations. The first extension exhibits conformal properties reminiscent of the singleton in Anti-de Sitter space. The second acts on the space of radiative solutions of the d'Alembert equation, i.e. on Sachs's representation of BMS, which we relate to the scalar massless Poincare representation and extend to any Carrollian manifold. The corresponding enveloping algebra is a higher-spin extension of BMS that can be interpreted as the asymptotic symmetry of a putative exotic higher-spin gravity theory around Minkowski spacetime. Along the way, we provide a pedagogical introduction to Carrollian geometry and its relation to BMS.

Dates and versions

hal-03782991 , version 1 (21-09-2022)

Identifiers

Cite

Xavier Bekaert, Blagoje Oblak. Massless Scalars and Higher-Spin BMS in Any Dimension. Journal of High Energy Physics, 2022, 11, pp.022. ⟨10.1007/JHEP11(2022)022⟩. ⟨hal-03782991⟩
31 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More