Covariant realizations of kappa-deformed space

@article{Meljanac2007CovariantRO,
  title={Covariant realizations of kappa-deformed space},
  author={Stjepan Meljanac and Sa{\vs}a Kre{\vs}i{\'c}–Juri{\'c} and Marko Stoji{\'c}},
  journal={The European Physical Journal C},
  year={2007},
  volume={51},
  pages={229-240}
}
We study a Lie algebra type κ-deformed space with an undeformed rotation algebra and commutative vector-like Dirac derivatives in a covariant way. The space deformation depends on an arbitrary vector. Infinitely many covariant realizations in terms of commuting coordinates of undeformed space and their derivatives are constructed. The corresponding coproducts and star products are found and related in a new way. All covariant realizations are physically equivalent. Specially, a few simple… 
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