Date
Target audience: Interns, Students, PostDocs, and those who are interested in the same research field.
Language: English
Date
Target audience: Interns, Students, PostDocs, and those who are interested in the same research field.
Language: English
Date
Seminar, as part of Thematic Program on Response Diversity
Language: English (no interpretation). Target audience: General audience / everyone at OIST and beyond. Freely accessible to all OIST members and guests without registration (also via Zoom).
Date
Target audience: Interns, Students, PostDocs, and those who are interested in the same research field.
Language: English
Date
Seminar by Prof. Orailoglu (UCSD). Algorithm-Centric Design of Reliable and Efficient Deep Learning Processing Systems
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Speaker: Prof. Ryoma Kamikawa, Graduate School of Agriculture, Kyoto University
Date
Title:
The Discrete Dirac operator and the mass of simple and higher-order networks
Abstract:
We discuss the properties of the discrete Dirac operator on simple and higher-order and its relevance to capture the coupled dynamics topological signals defined on nodes, links of graphs and even higher dimensional simplices.
We will show how the Dirac operator can be coupled with the algebra of gamma matrices to define a Dirac field theory in discrete Lorentzian spacetime in which the spinor is given a geometrical interpretation. The field theory also includes metric degree of freedom interpreted as the weights of the links for which we can define an action.
We use the discrete topological Dirac operator to define an action for a massless self-interacting topological Dirac field inspired by the Nambu–Jona-Lasinio model. We propose a theoretical framework that explains how the mass of simple and higher-order networks emerges from their topology and geometry. The mass of the network is strictly speaking the mass of this topological Dirac field defined on the network; it results from the chiral symmetry breaking of the model and satisfies a self-consistent gap equation. Interestingly, it is shown that the mass of a network depends on its spectral properties, topology, and geometry.
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Dr. Junichi Ikenouchi
Department of Biology, Faculty of Sciences, Kyushu University
Date
Title: Guiding Light to Non-Classicality
Speaker: Dr Philipp Schneeweiss, Humboldt University, Germany
Date
[Seminar] “Axonal transport disfunctions in neurodegenerative diseases” by Prof. Giampietro Schiavo