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arXiv · 2009.11769

Hyperk\"ahler Isometries Of K3 Surfaces

Anindya Banerjee·Gregory W. Moore
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Abstract

We consider symmetries of K3 manifolds. Holomorphic symplectic automorphisms of K3 surfaces have been classified, and observed to be subgroups of the Mathieu group $M_{23}$. More recently, automorphisms of K3 sigma models commuting with $SU(2)\times SU(2)$ $R$-symmetry have been classified by Gaberdiel, Hohenegger, and Volpato. These groups are all subgroups of the Conway group. We fill in a small gap in the literature and classify the possible hyperk\"ahler isometry groups of K3 manifolds. There is an explicit list of $40$ possible groups, all of which are realized in the moduli space. The groups are all subgroups of $M_{23}$.

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Anindya Banerjee, Gregory W. Moore. 2020-09-24. Hyperk\"ahler Isometries Of K3 Surfaces. https://doi.org/10.1007/jhep12(2020)193

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