Integration of Superforms and Super-Thom Class

Details Integration of Superforms and Super-Thom Class Integration of Superforms and Super-Thom Class

2007-12-16

arxiv.org/abs/0712.2600v2

Physics

High Energy Physics

High Energy Physics - Theory

32 pages, latex

Scientific paper

We address the basic problem of constructing the Thom class for a supermanifold. Given a cohomological class of a supermanifold and the restriction of the supermanifold to its bosonic submanifold, the Thom class gives a prescription to define the integral over the bosonic submanifold in terms of the integral over the entire supermanifold. In addition, we provide some new interesting examples of supermanifolds obtained by extending a given bosonic manifold, we discuss the construction of superforms of special type (which transform as Berezinian under change of supercoordinates) and we define the de Rham cohomology. We review the construction of the Thom class in the conventional geometry and we discuss the extension to the supermanifolds. Then, we compute explicitly the Thom class for the case of CP^{(1|2)} and, as expected, the result is singular. We provide a regularization technique to handle the fermionic Thom class in practical applications. We conclude with some remarks about Calabi-Yau spaces and their embedding into super-CY.

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