On the geometry of forms on supermanifolds
This paper provides a rigorous account on the geometry of forms on supermanifolds, with a focus on its algebraic-geometric aspects. First, we introduce the de Rham complex of differential forms and we compute its cohomology. We then discuss three intrinsic definitions of the Berezinian sheaf of a su...
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| Main Author: | |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
20 March 2023
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| In: |
Differential geometry and its applications
Year: 2023, Volume: 88, Pages: 1-71 |
| DOI: | 10.1016/j.difgeo.2023.101999 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.difgeo.2023.101999 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0926224523000256 
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| Author Notes: | Simone Noja |
MARC
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| 520 | |a This paper provides a rigorous account on the geometry of forms on supermanifolds, with a focus on its algebraic-geometric aspects. First, we introduce the de Rham complex of differential forms and we compute its cohomology. We then discuss three intrinsic definitions of the Berezinian sheaf of a supermanifold - as a quotient sheaf, via cohomology of the super Koszul complex or via cohomology of the total de Rham complex. Further, we study the properties of the Berezinian sheaf, showing in particular that it defines a right D-module. Then we introduce integral forms and their complex and we compute their cohomology, by providing a suitable Poincaré lemma. We show that the complexes of differential forms and integral forms are quasi-isomorphic and their cohomology computes the de Rham cohomology of the reduced space of the supermanifold. The notion of Berezin integral is then introduced and put to good use to prove the superanalog of Stokes' theorem and Poincaré duality, which relates differential and integral forms on supermanifolds. Finally, a different point of view is discussed by introducing the total tangent supermanifold and (integrable) pseudoforms in a new way. In this context, it is shown that a particular class of integrable pseudoforms having a distributional dependence supported at a point on the fibers are isomorphic to integral forms. Within the general overview, several new proofs of results are scattered. | ||
| 650 | 4 | |a Berezinian sheaf | |
| 650 | 4 | |a Differential and integral forms | |
| 650 | 4 | |a Integration on supermanifolds | |
| 650 | 4 | |a Supermanifolds | |
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