Mathematics – Algebraic Geometry
Scientific paper
2009-02-19
Mathematics
Algebraic Geometry
PhD thesis, 173 pages
Scientific paper
In this thesis we investigate a new formalism for supergeometry which focuses on the categorical properties of the theory. This approach is our main tool in the subsequent investigation of a global analytic approach to the construction of super Teichmueller spaces. These results should be of importance to various other fields, in particular, superstring theory and superconformal field theory. This new approach, which was actually first proposed by Molotkov and Schwarz and Voronov already in the mid-80s, is based on a consequent use of the functor of points. Apart from clarifying various issues of supergeometry which sometimes remain obscure in the standard (ringed-space) approach, its main achievement is that it makes infinite-dimensional supermanifolds available. We use this to define the supermanifold of all almost complex structures on a given finite-dimensional supermanifold and show that it actually carries a complex structure itself. Moreover we succeed in giving an explicit definition and construction of the diffeomorphism supergroup of a finite-dimensional supermanifold. We then combine these results to show that one can construct a slice for the action of the diffeomorphism supergroup on the subspace of integrable almost complex structures on a smooth closed oriented 2|2-dimensional supersurface. This slice represents a local patch of super Teichmueller space. We also investigate how this construction changes if one instead looks at N=1 superconformal structures on such a surface and show that one obtains an analogous result.
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