Interplay between spacetime curvature, speed of light and quantum deformations of relativistic symmetries

TL;DR

This paper reviews how quantum deformations of relativistic symmetries, influenced by spacetime curvature and the speed of light, affect associated noncommutative spacetimes, highlighting their complex interrelations.

Contribution

It provides a comprehensive survey of the properties and relationships of deformed relativistic symmetry algebras considering curvature, quantum deformation, and light speed effects.

Findings

Interplay between curvature, quantum deformation, and speed of light leads to nontrivial algebraic structures.

Relations among Poincaré, (A)dS, Galilei, and Carroll algebras are elucidated.

Noncommutative spacetimes associated with these algebras are characterized and compared.

Abstract

Recent work showed that $\kappa$-deformations can describe the quantum deformation of several relativistic models that have been proposed in the context of quantum gravity phenomenology. Starting from the Poincar\'e algebra of special-relativistic symmetries, one can toggle the curvature parameter $\Lambda$, the Planck scale quantum deformation parameter $\kappa$ and the speed of light parameter $c$ to move to the well-studied $\kappa$-Poincar\'e algebra, the (quantum) (A)dS algebra, the (quantum) Galilei and Carroll algebras and their curved versions. In this review, we survey the properties and relations of these algebras of relativistic symmetries and their associated noncommutative spacetimes, emphasizing the nontrivial effects of interplay between curvature, quantum deformation and speed of light parameters.