Differential forms and k-Minkowski spacetime from extended twist

TL;DR

This paper explores the structure of $ abla$-Minkowski spacetime using extended twist, revealing new ways to construct noncommutative coordinates and differential calculus compatible with $ abla$-deformed symmetries.

Contribution

It introduces an extended twist approach to construct $ abla$-Minkowski space and differential calculus consistent with $ abla$-deformed symmetries, addressing previous limitations.

Findings

Constructed $ abla$-deformed coordinates and forms using extended twist.

Showed incompatibility of Lorentz generators with commutative coordinates.

Presented a $ abla$-deformed super-Heisenberg algebra compatible with bicovariant calculus.

Abstract

We analyze bicovariant differential calculus on $\kappa$-Minkowski spacetime. It is shown that corresponding Lorentz generators and noncommutative coordinates compatible with bicovariant calculus cannot be realized in terms of commutative coordinates and momenta. Furthermore, $\kappa$-Minkowski space and NC forms are constructed by twist related to a bicrossproduct basis. It is pointed out that the consistency condition is not satisfied. We present the construction of $\kappa$-deformed coordinates and forms (super-Heisenberg algebra) using extended twist. It is compatible with bicovariant differential calculus with $\kappa$-deformed $\mathfrak{igl}(4)$-Hopf algebra. The extended twist leading to $\kappa$-Poincar\'{e}-Hopf algebra is also discussed.