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Prof. Michael Lenhard, Institute for Biochemistry and Biology, University of Potsdam, Germany
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Guest seminar hosted by CDQT.
Speaker: Prof. Jeroen van den Brink (Institute for Theoretical Solid State Physics, IFW Dresden)
Title: Topological surface superconductivity in PtBi2
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Speaker: Dr. Kenan Qu, Department of Astrophysical Sciences, Princeton University
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Target audience: Interns, Students, PostDocs, and those who are interested in the same research field.
Language: English
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Speaker: Dr. Sneha Munshi, CQuERE, The Chatterjee Group Centres for Research and Education in Science and Technology, Kolkata, India
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A Seminar by Kazuhiro Nagata, Director General, JT Biohistory Research Hall, Takatsuki (Osaka). Hosted by Prof. Yamamoto.
Keywords: molecular chaperone, ER-associated degradation (ERAD), ERdj5, LLPS
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Speaker:Dr. Hiroaki Matsunami,the Department of Molecular Genetics and Microbiology, the Duke University
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Speaker: Dr. Samuël Borza, University of Vienna
Title: Ollivier-Ricci curvature in non-smooth Lorentzian geometry and causal set theory
Abstract:
This talk will explore some aspects of non-smooth Lorentzian geometry, the mathematical framework underlying Einstein’s general relativity, which is currently being developed. Just as metric length spaces provide a synthetic generalisation of smooth Riemannian manifolds, the time-separation function plays the role of a “distance” in Lorentzian geometry. The need for a non-smooth Lorentzian framework appeared early on, most famously with Penrose’s singularity theorems. After introducing the basic concepts and some initial results in this synthetic setting, we will turn to causal set theory, a radical approach to quantum gravity in which spacetime is modelled as a discrete causal graph. I will formulate a new notion of curvature, inspired by Ollivier-Ricci curvature on metric graphs, using optimal transport between causal diamonds. We will see that it does recover Ricci curvature on smooth Lorentzian manifolds, and numerical examples will be presented.
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Language: English