Principal bundles in the category of $\mathbb{Z}_2^n$-manifolds

Fuente: arXiv
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Hauptverfasser: Bruce, Andrew James, Grabowski, Janusz
Format: Preprint
Veröffentlicht: 2024
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author Bruce, Andrew James
Grabowski, Janusz
author_facet Bruce, Andrew James
Grabowski, Janusz
contents We introduce and examine the notion of principal $\mathbb{Z}_2^n$-bundles, i.e., principal bundles in the category of $\mathbb{Z}_2^n$-manifolds. The latter are higher graded extensions of supermanifolds in which a $\mathbb{Z}_2^n$-grading replaces $\mathbb{Z}_2$-grading. These extensions have opened up new areas of research of great interest in both physics and mathematics. In principle, the geometry of $\mathbb{Z}_2^n$-manifolds is essentially different than that of supermanifolds, as for $n>1$ we have formal variables of even parity, so local smooth functions are formal power series. On the other hand, a full version of differential calculus is still valid. We show in this paper that the fundamental properties of classical principal bundles can be generalised to the setting of this `higher graded' geometry, with properly defined frame bundles of $\mathbb{Z}_2^n$-vector bundles as canonical examples. However, formulating these concepts and proving these results relies on many technical upshots established in earlier papers. A comprehensive introduction to $\mathbb{Z}_2^n$-manifolds is therefore included together with basic examples.
format Preprint
id arxiv_https___arxiv_org_abs_2412_12652
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Principal bundles in the category of $\mathbb{Z}_2^n$-manifolds
Bruce, Andrew James
Grabowski, Janusz
Differential Geometry
Mathematical Physics
14A22, 18F15, 58A50, 58D19
We introduce and examine the notion of principal $\mathbb{Z}_2^n$-bundles, i.e., principal bundles in the category of $\mathbb{Z}_2^n$-manifolds. The latter are higher graded extensions of supermanifolds in which a $\mathbb{Z}_2^n$-grading replaces $\mathbb{Z}_2$-grading. These extensions have opened up new areas of research of great interest in both physics and mathematics. In principle, the geometry of $\mathbb{Z}_2^n$-manifolds is essentially different than that of supermanifolds, as for $n>1$ we have formal variables of even parity, so local smooth functions are formal power series. On the other hand, a full version of differential calculus is still valid. We show in this paper that the fundamental properties of classical principal bundles can be generalised to the setting of this `higher graded' geometry, with properly defined frame bundles of $\mathbb{Z}_2^n$-vector bundles as canonical examples. However, formulating these concepts and proving these results relies on many technical upshots established in earlier papers. A comprehensive introduction to $\mathbb{Z}_2^n$-manifolds is therefore included together with basic examples.
title Principal bundles in the category of $\mathbb{Z}_2^n$-manifolds
topic Differential Geometry
Mathematical Physics
14A22, 18F15, 58A50, 58D19
url https://arxiv.org/abs/2412.12652