Journées Scientifiques de l'Action Thématique GRAM

Session

Gravitation

27 nov. 2026, 09:00

Amphi Pierre-Gilles de Gennes (Université Paris Cité)

15. Quantum modified inertia: an application to galaxy rotation curves

27/11/2026 09:00

The newly introduced Quantum Modified Inertia (QMI) framework is a relativistic theory of motion incorporating both upper and lower bounds on proper time. A mathematical consequence of these bounds is the emergence of corresponding upper and lower acceleration limits.
Focusing on the lower bound, a characteristic minimum acceleration naturally emerges from the analysis. Applied to galactic...

16. Single-bounce quantum gravimeter to measure the free-fall of anti-hydrogen

27/11/2026 09:30

We propose an innovative concept for a quantum gravimeter, where atoms prepared in a Heisenberg-limited state perform a single bounce on a mirror followed by a free fall. This quantum gravimeter produces a simple and robust interference pattern which should allow to measure the free-fall acceleration of atoms. The expected accuracy of the measurement is estimated using simulations and...