On the singular sets of solutions to the Kapustin–Witten equations and the Vafa–Witten ones on compact Kähler surfaces

This article finds a structure of singular sets on compact Kähler surfaces, which Taubes introduced in the studies of the asymptotic analysis of solutions to the Kapustin– Witten equations and the Vafa–Witten ones originally on smooth four-manifolds. These equations can be seen as real four-dimensio...

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Main Author: Tanaka, Y
Format: Journal article
Published: Springer 2018
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author Tanaka, Y
author_facet Tanaka, Y
author_sort Tanaka, Y
collection OXFORD
description This article finds a structure of singular sets on compact Kähler surfaces, which Taubes introduced in the studies of the asymptotic analysis of solutions to the Kapustin– Witten equations and the Vafa–Witten ones originally on smooth four-manifolds. These equations can be seen as real four-dimensional analogues of the Hitchin equations on Riemann surfaces, and one of common obstacles to be overcome is a certain unboundedness of solutions to these equations, especially of the “Higgs fields”. The singular sets by Taubes describe part of the limiting behaviour of a sequence of solutions with this unboundedness property, and Taubes proved that the real two-dimensional Haussdorff measures of these singular sets are finite. In this article, we look into the singular sets,when the underlying manifold is a compact Kähler surface, and find out that they have the structure of an analytic subvariety in this case.
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spelling oxford-uuid:13ff27e7-1a15-495e-883b-1e052c2046302022-03-26T10:17:05ZOn the singular sets of solutions to the Kapustin–Witten equations and the Vafa–Witten ones on compact Kähler surfacesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:13ff27e7-1a15-495e-883b-1e052c204630Symplectic Elements at OxfordSpringer2018Tanaka, YThis article finds a structure of singular sets on compact Kähler surfaces, which Taubes introduced in the studies of the asymptotic analysis of solutions to the Kapustin– Witten equations and the Vafa–Witten ones originally on smooth four-manifolds. These equations can be seen as real four-dimensional analogues of the Hitchin equations on Riemann surfaces, and one of common obstacles to be overcome is a certain unboundedness of solutions to these equations, especially of the “Higgs fields”. The singular sets by Taubes describe part of the limiting behaviour of a sequence of solutions with this unboundedness property, and Taubes proved that the real two-dimensional Haussdorff measures of these singular sets are finite. In this article, we look into the singular sets,when the underlying manifold is a compact Kähler surface, and find out that they have the structure of an analytic subvariety in this case.
spellingShingle Tanaka, Y
On the singular sets of solutions to the Kapustin–Witten equations and the Vafa–Witten ones on compact Kähler surfaces
title On the singular sets of solutions to the Kapustin–Witten equations and the Vafa–Witten ones on compact Kähler surfaces
title_full On the singular sets of solutions to the Kapustin–Witten equations and the Vafa–Witten ones on compact Kähler surfaces
title_fullStr On the singular sets of solutions to the Kapustin–Witten equations and the Vafa–Witten ones on compact Kähler surfaces
title_full_unstemmed On the singular sets of solutions to the Kapustin–Witten equations and the Vafa–Witten ones on compact Kähler surfaces
title_short On the singular sets of solutions to the Kapustin–Witten equations and the Vafa–Witten ones on compact Kähler surfaces
title_sort on the singular sets of solutions to the kapustin witten equations and the vafa witten ones on compact kahler surfaces
work_keys_str_mv AT tanakay onthesingularsetsofsolutionstothekapustinwittenequationsandthevafawittenonesoncompactkahlersurfaces