On the 5D differential calculus and translation transformations in 4D kappa-Minkowski noncommutative spacetime

Details On the 5D differential calculus and translation transformations in 4D kappa-Minkowski noncommutative spacetime On the 5D differential calculus and translation transformations in 4D kappa-Minkowski noncommutative spacetime

2007-09-13

arxiv.org/abs/0709.2063v1

Int.J.Mod.Phys.A24:5445-5463,2009

Physics

High Energy Physics

High Energy Physics - Theory

15 pages

Scientific paper

10.1142/S0217751X09046394

We perform a Noether analysis for a description of translation transformations in 4D $\kappa$-Minkowski noncommutative spacetime which is based on the structure of a 5D differential calculus. The techniques that some of us had previously developed (hep-th/0607221) for a description of translation transformations based on a 4D differential calculus turn out to be applicable without any modification, and they allow us to show that the basis usually adopted for the 5D calculus does not take into account certain aspects of the structure of time translations in $\kappa$-Minkowski. We propose a change of basis for the 5D calculus which leads to a more intuitive description of time translations.

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