"Topics in General Relativity" is the seminar of the Holzegel group at Mathematics Münster, University of Münster. It takes place Tuesdays at 12:00 (noon) in Room MA503 of the Mathematics Building, Einsteinstrasse 62. For further details or to receive e-mails concerning this seminar, please contact Chun-Kai Kevin Chien, the current organiser of the seminar.
The seminar schedule for previous semesters may be found here: Summer 2022, Winter 2022-2023, Summer 2023, Winter 2023-2024, Summer 2024, and Winter 2024-2025 .
The related "PDE Colloquium" takes place Tuesdays at 14:15 in Room SRZ 203 of the Seminarraumzentrum building, Orléans-Ring 12. Talks connected to the relativity group are cross-listed here. The full schedule can be found at the PDE Colloquium webpage. If you would like to be on the mailing list, please send an email to pde.colloquium@uni-muenster.de.
13th October 2026: Mahdi Haghshenas (U. Münster)
Topics in General Relativity, Room MA 503Title: Boundedness and energy estimates for wave equation on various spacetimes
Abstract: We will discuss the derivation of robust energy estimates, including energy boundedness, integrated local energy decay, and r^p estimates, on Minkowski space, Schwarzschild black hole, and FLRW spacetimes. We will compare how these methods apply in each setting and identify the geometric features captured by each estimates.
20th October 2026: Chun-Kai Kevin Chien (U. Münster)
Topics in General Relativity, Room MA 503Title: On metric determination from minimal areas in higher codimension
Abstract: Motivated by Riemannian minimal area rigidity in three dimensional manifolds foliated by minimal surfaces and the AdS/CFT correspondence in physics, we talk about forthcoming work in the analogous setting of two-dimensional minimal surfaces in Riemannian manifolds of dimension higher than three. This features joint work with Tracey Balehowsky, Matti Lassas, and Tony Liimatainen.
27th October 2026: Milos Provci (U. Münster)
Topics in General Relativity, Room MA 503Title: Dissipative boundary conditions for the Teukolsky equation in AdS and Schwarzschild-AdS
Abstract: I will present a linear stability result for Schwarzschild-Anti-de Sitter under the assumption of suitably motivated boundary conditions for the linearized system of gravitational perturbations. We will see a juxtaposition with other, equally admissible, boundary conditions on pure Anti-de Sitter, and discuss obstructions in the black hole case.
3rd November 2026: Lamberto Tresoldi (École Polytechnique)
Topics in General Relativity, Room MA 503Title: Nonlinear stability of Schwarzschild black holes for the Einstein–massless Dirac system in spherical symmetry
Abstract: We will discuss the nonlinear stability of Schwarzschild black holes for the Einstein–massless Dirac system under spherical symmetry. In particular, we will explore how standard techniques, such as energy estimates and bootstrap arguments, can be adapted to a setting in which the matter field is more deeply coupled to the geometry than in the corresponding Einstein–scalar field system, and the energy-momentum tensor does not satisfy the positive energy condition.
10th November 2026: Mónica Tapia del Moral (U. Cambridge)
Topics in General Relativity, Room MA 503Title:
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1st December 2026: Maurice Schmit (ETH Zurich)
Topics in General Relativity, Room MA 503Title:
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