activity
20202025
most citedSemi-abelian spectral data for singular fibres of the -Hitchin system

2 citations · 3 across the 7 of their papers we have counts for

collaborators

7 papers

math.AG2025

Wall-crossing formulas via spectral networks

Johannes Horn, Martin Möller

We give a self-contained proof of the Kontsevich-Soibelman wall-crossing formula entirely in the scope of quadratic differentials without relying on input from DT theory. Our appro…

math.DG2025

The asymptotics of the -Hitchin metric on the singular locus: subintegrable systems

Siqi He, Johannes Horn, Nianzi Li

We study the asymptotic hyperkähler geometry of the -Hitchin moduli space over the singular fibers of the Hitchin fibration. We extend the previously kno…

math.AG2024

Fourier-Mukai transforms and normalisation of nodal curves

Emilio Franco, Robert Hanson, Johannes Horn +1

We study Arinkin's Poincaré sheaf on the singular locus of , the compactified Jacobian of rank one torsion-free sheaves on an integral no…

math.AG2023★ 1 cited

Visible Lagrangians for Hitchin Systems and Pillowcase Covers

Johannes Horn, Johannes Schwab

We study complex Lagrangians in Hitchin systems that factor through a proper subvariety of the Hitchin base non-trivially intersecting the regular locus. This gives a general frame…

math.AG2022

Compactifying the rank two Hitchin system via spectral data on semistable curves

Johannes Horn, Martin Möller

We study resolutions of the rational map to the moduli space of stable curves that associates with a point in the Hitchin base the spectral curve. In the rank two case the answer i…

math.AG2020

-type singular fibres of the symplectic and odd orthogonal Hitchin system

Johannes Horn

We define and parametrise so-called -type fibres of the - and -Hitchin system. These are (singular) Hitc…

math.AG2020★ 2 cited

Semi-abelian spectral data for singular fibres of the -Hitchin system

Johannes Horn

We describe spectral data for singular fibres of the -Hitchin fibration with irreducible and reduced spectral curve. Using Hecke transformations we give…