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JOURNALS // Symmetry, Integrability and Geometry: Methods and Applications // Archive

SIGMA, 2023 Volume 19, 079, 19 pp. (Mi sigma1974)

About a Family of ALF Instantons with Conical Singularities

Olivier Biquarda, Paul Gauduchonb

a Sorbonne Université and Université Paris Cité, CNRS, IMJ-PRG, F-75005 Paris, France
b Ecole Polytechnique, CNRS, CMLS, F-91120 Palaiseau, France

Abstract: We apply the techniques developed in our previous article to describe some interesting families of ALF gravitational instantons with conical singularities. In particular, we completely understand the 5-dimensional family of Chen–Teo metrics and prove that only 4-dimensional subfamilies can be smoothly compactified so that the metric has conical singularities.

Keywords: gravitational instantons, toric geometry, conformally Kähler metrics.

MSC: 53C25, 53C55

Received: June 21, 2023; in final form October 10, 2023; Published online October 20, 2023

Language: English

DOI: 10.3842/SIGMA.2023.079


ArXiv: 2306.11110


© Steklov Math. Inst. of RAS, 2025