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Construction of G2-instantons via twisted connected sums

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Autor(es):
Menet, Gregoire ; Nordstrom, Johannes ; Earp, Henrique N. Sa
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: MATHEMATICAL RESEARCH LETTERS; v. 28, n. 2, p. 39-pg., 2021-01-01.
Resumo

We propose a method to construct G(2)-instantons over a compact twisted connected sum G(2)-manifold, applying a gluing result of Sa Earp and Walpuski to instantons over a pair of 7-manifolds with a tubular end. In our example, the moduli spaces of the ingredient instantons are non-trivial, and their images in the moduli space over the asymptotic cross-section K3 surface intersect transversely. Such a pair of asymptotically stable holomorphic bundles is obtained using a twisted version of the Hartshorne-Serre construction, which can be adapted to produce other examples. Moreover, their deformation theory and asymptotic behaviour are explicitly understood, results which may be of independent interest. (AU)

Processo FAPESP: 14/05733-9 - Geometria de variedades simpléticas irredutíveis
Beneficiário:Grégoire Menet
Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 14/24727-0 - G2-instantons sobre somas conexas torcidas
Beneficiário:Henrique Nogueira de Sá Earp
Modalidade de apoio: Auxílio à Pesquisa - Regular