Gravity Seminars
Upcoming seminars
All Gravity seminars are held on Tuesdays at 13:00, in Auditorium A, Blegdamsvej 17.
The NBIA Gravity seminars bring together three areas of research at the NBIA tied together by gravity:
- Black hole and gravitational wave astrophysics
- Strong gravity
- Gravity from particle amplitudes
The seminars are intended to be accessible to researchers and students spanning the range of topics above.
| Date | Speaker |
| May 7, 2024 |
Sofie Koksbang, Southern University of Denmark (SDU) Title: Observational effects of cosmic backreaction with concrete abstract cosmology and machine learning Abstract: Cosmic backreaction is a concept from inhomogeneous cosmology which originally gained attention because the phenomenon can lead to apparent accelerated expansion of the universe without dark energy. However, it is at this point unclear to what extent cosmic backreaction is relevant for our universe. One of the methods for revealing its importance (or lack thereof) is using observational tests that can either reveal a deviation from FLRW behavior or directly reveal effects of cosmic backreaction. In this talk, I will give a brief review of cosmic backreaction. I will then introduce "concrete abstract cosmology" and discuss the observational signatures of backreaction that have been uncovered with this approach and what possibilities the approach gives when combined with machine learning. |
| May 14, 2024 |
Ira Rothstein, Carnegie Mellon University |