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Associative realizations of the extended Snyder model

Meljanac, Stjepan; Mignemi, Salvatore (2020) Associative realizations of the extended Snyder model. Physical review. D, 102 . pp. 126011-1. ISSN 2470-0010

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The star product usually associated with the Snyder model of noncommutative geometry is nonassociative, and this property prevents the construction of a proper Hopf algebra. It is however possible to introduce a well-defined Hopf algebra by including the Lorentz generators and their conjugate momenta into the algebra. In this paper, we study the realizations of this extended Snyder spacetime, and obtain the coproduct and twist and the associative star product in a Weyl-ordered realization, to first order in the noncommutativity parameter. We then extend our results to the most general realizations of the extended Snyder spacetime, always up to first order.

Item Type: Article
Uncontrolled Keywords: Snyder spacetime ; realization ; star product ; Hopf algebra ; twist
Subjects: NATURAL SCIENCES > Physics
Divisions: Theoretical Physics Division
Depositing User: Stjepan Meljanac
Date Deposited: 19 Jan 2021 08:08
DOI: 10.1103/PhysRevD.102.126011

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