Naslov
Associative realizations of kappa-deformed extended Snyder model

Autori
Meljanac, Stjepan ; Mignemi, Salvatore

Izvornik
Physical review. D (2470-0010) 104 (2021); 086006, 9

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Snyder spacetime ; realization ; star product ; Hopf algebra ; twist

Sažetak
Usually, the realizations of the noncommutative Snyder model lead to a nonassociative star product. However, it has been shown that this problem can be avoided by adding to the spacetime coordinates new tensorial degrees of freedom. The model so obtained, called the extended Snyder model, can be subject to a kappa deformation, giving rise to a unification of the Snyder and the κ-Poincar ́e algebras in the formalism of extended spacetime. In this paper we review this construction and consider the generic realizations of the kappa-deformed extended Snyder model, calculating the associated star product, coproduct, and twist in a perturbative setting. We also introduce a representation of the Lorentz algebra in the extended space and speculate on possible interpretations of the tensorial degrees of freedom.

Izvorni jezik
Engleski

Znanstvena područja
Matematika, Fizika

POVEZANOST RADA