Sebastian Heller

I am a research fellow (research professor) at
Beijing Institute of Mathematics Sciences and Applications (BIMSA) Huairou, Beijing

Email: sheller@bimsa.cn

Research


My research interests include global surface geometry, integrable systems and moduli space of flat connections. In particular, I am interested in the construction of compact minimal, CMC and Willmore surfaces in the 3-sphere. I also work on Higgs bundles Hitchin equations, and the construction of related hyper-kaehler metrics. Recently, I have been investigating several problems concerning the monodromy representation of holomorphic systems.

Three views of a constant mean curvature surface in the 3-sphere. Images by Nick Schmitt based on the joint paper 'Deformations of symmetric CMC surfaces in the 3-sphere'.

Publications


Preprints


  1. Loop group methods for the non-abelian Hodge correspondence on a 4-punctured sphere

    with Lynn Heller and Martin Traizet
    Preprint: arxiv: 2205.12106

  2. Affine thrice punctured spheres and SYZ geometry

    with Franz Pedit and Charles Ouyang
    Preprint: arxiv: 2203.04224

  3. Infinitesimal deformations of parabolic connections and parabolic opers

    with Indranil Biswas, Sorin Dumitrescu, and Christian Pauly
    Preprint: arxiv: 2202.09125

  4. Fuchsian DPW potentials for Lawson surfaces

    with Lynn Heller
    Preprint: arxiv: 2202.05184

  5. On the existence of holomorphic curves in compact quotients of SL(2,C)

    with Indranil Biswas, Sorin Dumitrescu and Lynn Heller
    Preprint: arxiv: 2112.03131

  6. Complete families of embedded high genus CMC surfaces in the 3-sphere

    with Lynn Heller and Martin Traizet
    Preprint: arxiv: 2108.10214

  7. Holomorphic sl(2,C)-systems with Fuchsian monodromy (with an appendix by Takuro Mochizuki)

    with Indranil Biswas, Sorin Dumitrescu and Lynn Heller
    Preprint: arxiv: 2104.04818

  8. Geometry of the space of sections of twistor spaces with circle action

    with Florian Beck, Inrdanil Biswas, and Markus Roeser
    Preprint: arxiv: 2102.10853

  9. Exploring the space of compact symmetric CMC surfaces

    with Lynn Heller and Nicholas Schmitt
    Preprint: arxiv: 1503.07838

Accepted and published


  1. Branched SL(r, C)-opers

    with Inranil Biswas and Sorin Dumitrescu
    accpeted for publication in IMRN
    Preprint: arxiv:2109.07685

  2. Real projective structures on Riemann surfaces and new hyper-K�hler manifolds

    Manuscripta Mathematica, doi.org/10.1007/s00229-022-01377-z, (2022)
    Preprint: arxiv:1906.10350

  3. On the monodromy map for the logarithmic differential systems

    with Marian Aprodu, Indranil Biswas and Sorin Dumitrescu
    accepted for publication in Bulletin de la Societe Mathematique de France
    Preprint: arxiv: 2201.04095

  4. Area estimates for high genus Lawson surfaces via DPW

    with Lynn Heller and Martin Traizet
    accepted for publication in Journal of Differential Geometry
    Preprint: arxiv: 1907.07139

  5. Uniformization of branched surfaces and Higgs bundles

    with Indranil Biswas, Steven Bradlow and Sorin Dumitrescu
    Int. J. of Mathematics, Vol. 32, No. 13 (2021)
    Preprint: arxiv: 2101.03080

  6. Branes and moduli spaces of Higgs bundles on smooth projective varieties

    with Indranil Biswas and Laura Schaposnik
    Research in the Mathematical Sciences, 8 (2021), no. 3, Paper No. 52
    Preprint: arxiv: 2005.02564

  7. Stability properties of 2-lobed Delaunay tori in the 3-sphere

    with Lynn Heller and Cheikh B. Ndiaye
    Differential Geometry and its Applications, Volume 79, 2021, doi.org/10.1016/j.difgeo.2021.101805
    Preprint: arxiv: 1903.11830

  8. Constant mean curvature surfaces based on fundamental quadrilaterals

    with Alexander Bobenko and Nicholas Schmitt
    Math. Physics, Analysis and Geometry 24, 37 (2021)
    Preprint: arxiv: 2102.03153

  9. Isothermic constrained Willmore tori in 3-space

    with Lynn Heller and Cheikh B. Ndiaye
    Annals of Global Analysis and Geometry, 60 (2021), no. 2, 231-251
    Preprint: arxiv: 1903.11823

  10. On certain Tannakian categories of integrable connections over Kaehler manifolds

    with Indranil Biswas, Sorin Dumitrescu, and Joao Dos Santos
    Canadian Journal of Mathematics, 1-28. https://www.doi.org/10.4153/S0008414X21000201
    Preprint: arxiv:2008.11483

  11. Willmore spheres in the 3-sphere revisited


    accepted for publication in Communications in Analysis and Geometry
    Preprint: arxiv: 2003.06922

  12. Irreducible flat SL(2, R)-connections on the trivial holomorphic bundle

    with Indranil Biswas and Sorin Dumitrescu
    Journal de Mathematiques Pures et Appliquees (9) 149 (2021), 28-46
    Preprint: arxiv: 2003.06997

  13. Higher solutions of Hitchin?s self-duality equations

    with Lynn Heller
    Journal of Integrable Systems Volume 5, Issue 1, 2020, xyaa006
    Preprint: arxiv: 1801.02402

  14. Energy of sections of the Deligne-Hitchin twistor space

    with Florian Beck and Markus Roeser
    Math. Annalen 380 (2021), no. 3-4, 1169-1214
    Preprint: arxiv:1903.02497

  15. Minimal n-noids in hyperbolic and anti-de Sitter 3-space

    with Alexander Bobenko and Nicolas Schmitt
    Proceedings of the Royal Society A, DOI: 10.1098/rspa.2019.0173
    Preprint: arxiv: 1902.07992

  16. Real holomorphic sections of the Deligne-Hitchin moduli space

    with Indranil Biswas and Markus Roeser
    Comm. Math. Phys., Volume 366, Issue 3 (2019), pages 1099- 1133
    Preprint: arxiv: 1802.06587

  17. Branes through finite group actions

    with Laura P. Schaposnik
    J. Geom. Phys., Volume 129, July 2018, Pages 279-293
    Preprint: arxiv: 1611.00391

  18. Navigating the Space of Symmetric CMC Surfaces

    with Lynn Heller and Nicholas Schmitt
    Journal of Differential Geometry, vol. 110, no. 3 (2018), pp. 413-455
    Preprint: arxiv: 1501.01929

  19. Automorphisms of a rank one Deligne-Hitchin moduli space

    with Indranil Biswas
    SIGMA 13 (2017), 072, 19 pages.
    Preprint: arxiv: 1704.04924
  20. The asymptotic behavior of the monodromy representations of the associated families of compact CMC surfaces

    Bulletin of the London Mathematical Society 2016; doi: 10.1112/blms/bdw036
    Preprint: arXiv:1505.00747

  21. The spectral curve theory for (k,l)-symmetric CMC surfaces

    with Lynn Heller and Nicholas Schmitt
    J. Geom. Phys. 98 (2015), 201-213. http://dx.doi.org/10.1016/j.geomphys.2015.08.010
    Preprint version

  22. Abelianization of Fuchsian Systems on a 4-punctured sphere and applications

    with Lynn Heller
    Journal of Symplectic Geometry, Vol. 14, No. 4 (2016), pp. 1059-1088
    Preprint version

  23. Conformally flat circle bundles over surfaces

    Diff. Geom. Appl. 40 (2015), 103-110.
    Preprint version

  24. Deformations of symmetric CMC surfaces in the 3-sphere

    with Nick Schmitt
    Experimental Mathematics , Volume 24, Issue 1 (2015), pp 65-75.
    Preprint: arxiv: 1305.4107

  25. A spectral curve approach to Lawson symmetric CMC surfaces of genus 2

    Math. Annalen, Volume 360, Issue 3 (2014), pp 607-652.
    DOI: 10.1007/s00208-014-1044-4
    Preprint: arxiv: 1209.3200

  26. Lawson's genus two minimal surface and meromorphic connections

    Math. Z., Volume 274 (2013), pp 745-760.
    DOI: 10.1007/s00209-012-1094-9
    Preprint version

  27. Higher genus minimal surfaces in S^3 and stable bundles.

    J. Reine Angew. Math. (Crelle's Journal), Volume 685 (2013), pp 105-122.
    DOI: 10.1515/crelle-2012-0011
    Preprint version

  28. Conformal fibrations of S3 by circles.

    Harmonic maps and differential geometry, Contemp. Math., Amer. Math. Soc., Providence, RI, Volume 542 (2011), pp 195-202.
    Preprint version

  29. Harmonic morphisms on conformally flat 3-spheres

    Bull. Lond. Math. Soc., Volume 43 (2011), no. 1, 137-150.

Conference Proceedings


  1. Higher genus CMC surfaces via integrable systems

    Abresch U, Pedit F, Umehara M.: Progress in Surface Theory. Oberwolfach Rep. Volume 10 (2013), pp 1253-1312.
    DOI: 10.4171/OWR/2013/21

  2. Global aspects of integrable surface geometry

    with A. Gerding, F. Pedit and N. Schmitt
    in Systèmes intégrables et théorie des champs quantiques, eds: P. Baird, F. Hélein, J. Kouneiher, F. Pedit, V. Roubtsov, collection Travaux en Cours en Physique-Mathématiques, no 75, Hermann (2009).