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arXiv · hep-th/0101217

$Z_2\times Z_2$ Lattice as a Connes-Lott-Quantum Group Model

S. Majid·T. Schucker
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Abstract

We apply quantum group methods for noncommutative geometry to the $Z_2\times Z_2$ lattice to obtain a natural Dirac operator on this discrete space. This then leads to an interpretation of the Higgs fields as the discrete part of spacetime in the Connes-Lott formalism for elementary particle Lagrangians. The model provides a setting where both the quantum groups and the Connes approach to noncommutative geometry can be usefully combined, with some of Connes' axioms, notably the first-order condition, replaced by algebraic methods based on the group structure. The noncommutative geometry has nontrivial cohomology and moduli of flat connections, both of which we compute.

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S. Majid, T. Schucker. 2001-01-30. $Z_2\times Z_2$ Lattice as a Connes-Lott-Quantum Group Model. https://doi.org/10.1016/s0393-0440(02)00005-0

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