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Stability conditions for polarised varieties

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Dervan, Ruadhaí 

Abstract

jats:titleAbstract</jats:title> jats:pWe introduce an analogue of Bridgeland’s stability conditions for polarised varieties. Much as Bridgeland stability is modelled on slope stability of coherent sheaves, our notion of jats:italicZ</jats:italic>-stability is modelled on the notion of K-stability of polarised varieties. We then introduce an analytic counterpart to stability, through the notion of a jats:italicZ</jats:italic>-critical Kähler metric, modelled on the constant scalar curvature Kähler condition. Our main result shows that a polarised variety which is analytically K-semistable and asymptotically jats:italicZ</jats:italic>-stable admits jats:italicZ</jats:italic>-critical Kähler metrics in the large volume regime. We also prove a local converse and explain how these results can be viewed in terms of local wall crossing. A special case of our framework gives a manifold analogue of the deformed Hermitian Yang–Mills equation.</jats:p>

Description

Keywords

4901 Applied Mathematics, 4902 Mathematical Physics, 4904 Pure Mathematics, 49 Mathematical Sciences

Journal Title

Forum of Mathematics, Sigma

Conference Name

Journal ISSN

2050-5094
2050-5094

Volume Title

Publisher

Cambridge University Press (CUP)
Sponsorship
Royal Society (URF\R1\201041)