Dear colleagues,
To promote scientific discussions during this pandemic, we are organizing a multi-institutional online monthly colloquium series, i.e. Copernicus Colloquium Series (CCS), seeking the most outstanding speakers to introduce innovative ideas and frontier research in various fields. The CCS is a sister series associated with the Copernicus Webinar Series (CWS), both are named after the famous Polish Astronomer, Nicolaus Copernicus, whose discovery eventually marked the dawn of modern science.
We would like to invite you to take part in the upcoming 22nd Colloquium talk,
Speaker: David Langlois (Universite Paris Cite, CNRS, AstroParticule et Cosmologie)
Time: 23rd March, Thursday, 3pm CET (10 pm Beijing, 11 pm JST, 10am EDT)
Title: Scalar-tensor theories of modified gravity in cosmology and in strong-gravity objects.
Abstract:
This talk will present theories of modified gravity that contain a single scalar degree of freedom, in particular the very general framework of Degenerate Higher-Order Scalar-Tensor (DHOST) theories, which includes and extends Horndeski and Beyond Horndeski theories. I will then discuss cosmological aspects of these theories, notably the dynamics of cosmological perturbations. I will also present some results on non-rotating black holes and their perturbations in the context of DHOST theories.
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Zoom link:
https://hkust.zoom.us/my/copernicus
meeting id: 9423380685
Password: gravity
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