Real orientations, real Gromov-Witten theory, and real enumerative geometry
| Autor: | Penka Georgieva, Aleksey Zinger |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
High Energy Physics - Theory
Pure mathematics General Mathematics FOS: Physical sciences Vector bundle 0102 computer and information sciences Algebraic geometry 01 natural sciences Enumerative geometry Mathematics - Algebraic Geometry Mathematics::Algebraic Geometry Operator (computer programming) FOS: Mathematics 0101 mathematics Algebraic Geometry (math.AG) Mathematics::Symplectic Geometry Mathematics 010102 general mathematics Base (topology) Differential operator Moduli space High Energy Physics - Theory (hep-th) Mathematics - Symplectic Geometry 010201 computation theory & mathematics 14N35 53D45 Symplectic Geometry (math.SG) Symplectic geometry |
| Zdroj: | Electronic Research Announcements in Mathematical Sciences |
| ISSN: | 1935-9179 |
| DOI: | 10.3934/era.2017.24.010 |
| Popis: | The present note overviews our recent construction of real Gromov-Witten theory in arbitrary genera for many real symplectic manifolds, including the odd-dimensional projective spaces and the renowned quintic threefold, its properties, and its connections with real enumerative geometry. Our construction introduces the principle of orienting the determinant of a differential operator relative to a suitable base operator and a real setting analogue of the (relative) spin structure of open Gromov-Witten theory. Orienting the relative determinant, which in the now-standard cases is canonically equivalent to orienting the usual determinant, is naturally related to the topology of vector bundles in the relevant category. This principle and its applications allow us to endow the uncompactified moduli spaces of real maps from symmetric surfaces of all topological types with natural orientations and to verify that they extend across the codimension-one boundaries of these spaces, thus implementing a far-reaching proposal from C.-C. Liu's thesis. 13 pages |
| Databáze: | OpenAIRE |
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