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

SIGMA, 2023 Volume 19, 067, 23 pp. (Mi sigma1962)

Real Slices of ${\rm SL}(r,\mathbb{C})$-Opers

Indranil Biswasa, Sebastian Hellerb, Laura P. Schaposnikc

a Department of Mathematics, Shiv Nadar University, NH91, Tehsil Dadri, Greater Noida, Uttar Pradesh 201314, India
b Beijing Institute of Mathematical Sciences and Applications, Beijing 101408, P.R. China
c Department of Mathematics, Statistics, and Computer Science, University of Illinois at Chicago, 851 S Morgan St, Chicago, IL 60607, USA

Abstract: Through the action of an anti-holomorphic involution $\sigma$ (a real structure) on a Riemann surface $X$, we consider the induced actions on ${\rm SL}(r,\mathbb{C})$-opers and study the real slices fixed by such actions. By constructing this involution for different descriptions of the space of ${\rm SL}(r,\mathbb{C})$-opers, we are able to give a natural parametrization of the fixed point locus via differentials on the Riemann surface, which in turn allows us to study their geometric properties.

Keywords: opers, real structure, differential operator, anti-holomorphic involution, real slice.

MSC: 14H60, 33C80, 53A55

Received: April 12, 2023; in final form September 5, 2023; Published online September 16, 2023

Language: English

DOI: 10.3842/SIGMA.2023.067


ArXiv: 2212.01695


© Steklov Math. Inst. of RAS, 2025