Séminaire Doctoral / Seminar PhD |
| « MICROSCOPE (2?) and the search for a fifth-force » |
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Hugo Lévy |
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The recent MICROSCOPE space mission has allowed for an unprecedented precision on the test of the weak equivalence principle: a postulate that is central to Einstein's theory of General Relativity. This in-orbit experiment consisted in comparing the free fall of several test masses by means of ultra-sensitive accelerometers. Beyond testing the foundation of GR, MICROSCOPE can be used for probing various modified gravity models, some of which predict the existence of a putative fifth-force. Do we have a chance to detect it with space-based experiments?
In this talk, I will guide you through the epic of MICROSCOPE, from the principle of the experiment to its main results. In the second half of the presentation, I will focus on a specific class of modified gravity models and discuss some numerical studies conducted in satellite-reachable locations of the solar system. May the force be with you next Friday! |
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vendredi 6 mai 2022 - 16:00 Salle du Conseil, Institut d'Astrophysique |
| Page web du séminaire / Seminar's webpage |