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# Aspects of the Seiberg-Witten Equations on Manifolds with Cusps

 dc.contributor.advisor Claude LeBrun. Michael Anderson. en_US dc.contributor.author Di Cerbo, Luca Fabrizio en_US dc.contributor.other Department of Mathematics en_US dc.date.accessioned 2012-05-17T12:20:23Z dc.date.accessioned 2015-04-24T14:48:02Z dc.date.available 2012-05-17T12:20:23Z dc.date.available 2015-04-24T14:48:02Z dc.date.issued 2011-05-01 dc.identifier DiCerbo_grad.sunysb_0771E_10456.pdf en_US dc.identifier.uri http://hdl.handle.net/1951/55983 en_US dc.identifier.uri http://hdl.handle.net/11401/71584 en_US dc.description.abstract In this work we study several geometrical and analytical aspects arising from the study of the Seiberg-Witten equations on manifolds with cusps. We study the classification of smooth toroidal compactifications of nonuniform ball quotients in the sense of Kodaira and Enriques. Moreover, several results concerning the Riemannian and complex algebraic geometry of these spaces are given. In particular we show that there are compact complex surfaces which admit Riemannian metrics of nonpositive curvature, but which do not admit K\ahler metrics of nonpositive curvature. An infinite class of such examples arise as smooth toroidal compactifications of ball quotients. The proof of these results use a Riemannian cusps closing technique developed by Hummel and Schroeder. Using a construction due to Biquard, we derive an obstruction to the existence of cuspidal Einstein metrics on finite-volume complex surfaces. This generalizes a theorem of LeBrun for compact complex surfaces. As in the compact case, such a result relies on a Seiberg-Witten scalar curvature estimate. Then, the obstruction is made explicit on some examples. Finally, we study the Seiberg-Witten equations on noncompact manifolds which are diffeomorphic to the product of two hyperbolic Riemann surfaces. By extending some constructions of Biquard and Rollin, we show how to construct irreducible solutions of the Seiberg-Witten equations for \emph{any} metric of finite volume which has a nice'' behavior at infinity. We conclude by giving the finite volume generalization of some celebrated results of LeBrun. en_US dc.description.sponsorship This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. en_US dc.format Monograph en_US dc.format.medium Electronic Resource en_US dc.language.iso en_US en_US dc.publisher The Graduate School, Stony Brook University: Stony Brook, NY. en_US dc.subject.lcsh Mathematics en_US dc.subject.other Geometry of 4-manifolds, Seiberg-Witten equations en_US dc.title Aspects of the Seiberg-Witten Equations on Manifolds with Cusps en_US dc.type Dissertation en_US dc.mimetype Application/PDF en_US dc.contributor.committeemember Blaine Lawson en_US dc.contributor.committeemember Martin Rocek. en_US
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