Positivität relativer kanonischer Bündel und Krümmung höherer direkter Bildgarben auf Familien von Calabi-Yau-Mannigfaltigkeiten
In dieser Arbeit werden geometrische Eigenschaften des Modulraums polarisierter Calabi-Yau-Mannigfaltigkeiten mittels Methoden der komplex-analytischen Differentialgeometrie untersucht. Dazu werden Familien polarisierter Calabi-Yau-Mannigfaltigkeiten betrachtet. Die Fasern einer solchen Familie besi...
मुख्य लेखक: | |
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अन्य लेखक: | |
स्वरूप: | Dissertation |
भाषा: | जर्मन |
प्रकाशित: |
Philipps-Universität Marburg
2015
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विषय: | |
ऑनलाइन पहुंच: | पीडीएफ पूर्ण पाठ |
टैग: |
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This thesis deals with geometric properties of the moduli space of polarized Calabi-Yau manifolds employing methods from complex-analytic differential geometry. Given a family of polarized Calabi-Yau manifolds, the fibers possess unique Ricci-flat Kähler metrics with cohomology classes prescribed by the polarization. These Kähler metrics induce a Hermitian metric on the relative canonical bundle of the family, whose curvature form is studied. Moreover, a sufficient condition for the existence of a semi-Ricci-flat Kähler metric on the total space of a family is shown. Furthermore, certain higher direct image sheaves, carrying natural Hermitian metrics which generalize the Weil-Petersson metric on the moduli space, are considered. The curvature tensor of these metrics is calculated and some applications are outlined.