Author

Lorenzo Di Giacomo

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Preprint Oct 2026

On the geometric origin of central charges in gravity

Central extensions of asymptotic symmetry algebras are traditionally determined through an explicit computation of the algebra of conserved charges. We show that, within an ambiguity-free covariant phase space formalism based on the Noetherian split, they instead arise as intrinsic quantities completely determined by t...

Lorenzo Di Giacomo, Daniele Pranzetti · 0 citations

Preprint Aug 2026

Higher-spin charges and the $L_{\Lambda} w_{1 + \infty}$ algebra in (A)dS$_4$

We consider $(3+1)$-dimensional asymptotically locally (anti-)de Sitter ((A)dS$_4$) spacetimes with boundary conditions allowing for gravitational flux. We construct an infinite tower of higher-spin charges as perturbative solutions in the cosmological constant $\Lambda$ to a hierarchy of evolution equations resulting...

Lorenzo Di Giacomo, Maitá Micol, Daniele Pranzetti et al. · 0 citations