Vorträge
Vorträge diese Woche
Donnerstag, 24.09.2026: Spinorial quasilocal mass and the cosmological constant
Dr. Virinchi Rallabhandi (University of Edinburgh)
Abstract: In this talk Dr. Virinchi Rallabhandi will discuss spinorial approaches to quasilocal mass and the effects of a cosmological constant. He will start by reviewing quasilocal masses in general relativity, with a focus on the Dougan-Mason definition. Then, he will present my generalisation of this definition to include a negative cosmological constant and explain some of its properties. Finally, Dr. Virinchi Rallabhandi will conclude with some speculation about incorporating a positive cosmological constant and the difficulties this entails.
| Uhrzeit: | 14:00 |
| Ort: | C4H33 |
| Gruppe: | Oberseminar Geometrische Analysis, Differentialgeometrie und Relativitätstheorie |
| Einladender: | Prof. Dr. Carla Cederbaum |
Donnerstag, 22.10.2026: Algorithmic Randomness and Physical Typicality
Prof. Eddy Keming Chen (University of California, San Diego)
Appeals to typicality are common in physics, but it is often unclear what it means for a physical state to be typical relative to a probability measure, and correspondingly unclear what a law that appeals to typicality asserts. Here we consider how one might characterize physical typicality using ideas from the theory of algorithmic randomness. As a concrete example, we show how taking a physical state to be typical relative to a computable measure when it is Martin-Löf random allows one to formulate the distribution postulate in Bohmian mechanics as a statistical constraining law of the theory. Using a toy model, we show how this constraint guarantees the standard Born statistics for computable experimental protocols. Algorithmic Bohmian mechanics (aBM) thus illustrates how algorithmic randomness may be used to provide precise content to a statistical law. (Joint work with Jeffrey A. Barrett and Josiah Lopez-Wild; paper forthcoming in /Philosophy of Science,/ preprint at https://arxiv.org/abs/2609.06268) Two other related papers: Algorithmic Randomness and Probabilistic Laws (with Jeffrey A. Barrett) /The British Journal for the Philosophy of Science/, forthcoming, https://arxiv.org/abs/2303.01411 Algorithmic Randomness, Exchangeability, and the Principal Principle (with Jeffrey A. Barrett) /The British Journal for the Philosophy of Science/, forthcoming, https://arxiv.org/abs/2510.24054
| Uhrzeit: | 16:00 |
| Ort: | online - wenn Sie Zugang haben wollen, schicken Sie bitte eine Nachricht an Elena Kabagema-Bilan |
| Gruppe: | Oberseminar Mathematical Physics |
| Einladender: | Farhat, Keppeler, Lemm, Pickl, Teufel, Tumulka |
Montag, 16.11.2026: Vortrag in der Reihe "Mathematiker:innen im Beruf"
Dr. Lisa Hilken (AVAT Automation GmbH)
In der Vortragsreihe "Mathematiker:innen im Beruf", die sich vor allem an die Studierenden des Fachbereichs Mathematik richtet, berichten Mathematiker über ihren Werdegang, ihr jetziges Arbeitsfeld und wie ihnen ihr Mathematikstudium dabei zu gute kommt.
| Uhrzeit: | 16:15 - 17:00 |
| Ort: | N14 |
| Gruppe: | Kolloquium |
| Einladender: | Fachschaft Mathematik + Studiendekan |