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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2503.07176 |
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| _version_ | 1866915562337075200 |
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| author | Maris, Valentine Požar, Filip Wallet, Jean-Christophe |
| author_facet | Maris, Valentine Požar, Filip Wallet, Jean-Christophe |
| contents | Poisson structures of the Poincaré group can be linked to deformations of the Minkowski space-time, classified some time ago by Zakrewski. Based on this classification, various quantum Minkowski space-times with coordinates Lie algebras and specific Poincare Hopf algebras have been exhibited by Mercati and called T-Minkowski space-times. Here we construct the star products and involutions characterizing the $\star$-algebras for a broad family of Lie algebras which includes 11 out of 17 Lie algebras of T-Minkowski spaces. We show that the usual Lebesgue integral defines either a trace or a KMS weight ('twisted trace') depending on whether the Lie group of the coordinates' Lie algebra is unimodular or not. Finally, we give the Poincaré Hopf algebras when they are compatible with our $*$-product. General derivation of such symmetry Hopf algebras are briefly discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_07176 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Star-products for Lie-algebraic noncommutative Minkowski space-times Maris, Valentine Požar, Filip Wallet, Jean-Christophe High Energy Physics - Theory Mathematical Physics Poisson structures of the Poincaré group can be linked to deformations of the Minkowski space-time, classified some time ago by Zakrewski. Based on this classification, various quantum Minkowski space-times with coordinates Lie algebras and specific Poincare Hopf algebras have been exhibited by Mercati and called T-Minkowski space-times. Here we construct the star products and involutions characterizing the $\star$-algebras for a broad family of Lie algebras which includes 11 out of 17 Lie algebras of T-Minkowski spaces. We show that the usual Lebesgue integral defines either a trace or a KMS weight ('twisted trace') depending on whether the Lie group of the coordinates' Lie algebra is unimodular or not. Finally, we give the Poincaré Hopf algebras when they are compatible with our $*$-product. General derivation of such symmetry Hopf algebras are briefly discussed. |
| title | Star-products for Lie-algebraic noncommutative Minkowski space-times |
| topic | High Energy Physics - Theory Mathematical Physics |
| url | https://arxiv.org/abs/2503.07176 |