Lie algebra type noncommutative phase spaces are Hopf algebroids
Abstract
For a noncommutative configuration space whose coordinate algebra is the universal enveloping algebra of a finite dimensional Lie algebra, it is known how to introduce an extension playing the role of the corresponding noncommutative phase space, namely by adding the commuting deformed derivatives in a consistent and nontrivial way, therefore obtaining certain deformed Heisenberg algebra. This algebra has been studied in physical contexts, mainly in the case of the kappa-Minkowski space-time. Here we equip the entire phase space algebra with a coproduct, so that it becomes an instance of a completed variant of a Hopf algebroid over a noncommutative base, where the base is the enveloping algebra.
Cite
@article{arxiv.1409.8188,
title = {Lie algebra type noncommutative phase spaces are Hopf algebroids},
author = {Stjepan Meljanac and Zoran Škoda and Martina Stojić},
journal= {arXiv preprint arXiv:1409.8188},
year = {2016}
}
Comments
uses kluwer.cls; v. 2: 25 pages, significant corrections, 3 authors; version 3: significant revision, 32 pages, corrections and added geometrical viewpoint and preliminaries on formal differential operators; version 4: final corrections and slightly improved readability; accepted in Letters in Mathematical Physics