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(i) The next seminar in our series is Friday 13th November at 14:30 CET (GMT + 1 or local time in Germany & France); 13:30 UK local time
Speaker: Jeong-Hyuck Park (Sogang University)
Title: String Theory and non-Riemannian Geometry
Abstract: Ever since the invention of General Relativity, Riemannian geometry has been privileged to be the mathematical paradigm for modern physics, which enables us to address the very basic notion of `spacetime'. By now, Double Field Theory has evolved to achieve its own autonomy statute as an alternative gravitational theory to GR. Postulating the O(D,D) symmetry as the fundamental principle, GR and the Einstein Field Equations are unambiguously augmented. Further, it turns out that DFT encompasses not only the Riemannian geometry but also non-Riemannian ones where the notion of Riemannian metric ceases to exist. In this talk, after reviewing the above aspects of DFT, I will talk about my latest paper with Shigeki Sugimoto (arXiv:2008.03084), where we examined some quantum consistency of the non-Riemannian geometries as string theory novel backgrounds. The critical dimensions turn out to be the same as in the Riemannian cases (i.e. D=26 or 10). The BRST string spectrum differs, but still agrees with DFT or the Einstein Double Field Equations.
The seminar will take place on Zoom
Zoom Meeting ID 927-576-096
You must use your real name and affiliation to join the meeting. This way we can identify you in the waiting room and give you access to the seminar. You can join the meeting by clicking on the following link
-- Dr. Emanuel Malek Junior Research Group Leader Humboldt-Universität zu Berlin, Institute of Physics, Zum Großen Windkanal 6, 12489 Berlin, Germany Email:
(ii) The recordings and slides of previous talks of our series are available at https://sites.google.com/view/egseminars/
. The video and slides from Alex Arvanitakis' talk last Friday can be found under the following links:
We hope to see you on Friday,
Franz Ciceri, Gianluca Inverso, Emanuel Malek, Charles Strickland-Constable, Dan Thompson