Search Publications

MICROSCOPE's view at gravitation

Bergé, Joel

The weak equivalence principle (WEP) is the cornerstone of general relativity (GR). Testing it is thus a natural way to confront GR to experiments, which has been pursued for four centuries with increasing precision. MICROSCOPE is a space mission designed to test the WEP with a precision of 1 in 10¹⁵ parts, two orders of magnitude bette…

Search for Ultralight Dark Matter with a Frequency Adjustable Diamagnetic Levitated Sensor

Zhang, Liang; Li, Rui; Lin, Shaochun +3 more

Among several dark matter candidates, bosonic ultra-light (sub-meV) dark matter is well motivated because it could couple to the Standard Model and induce new forces. Previous MICROSCOPE and Eöt-Wash torsion experiments have achieved high accuracy in the sub-1 Hz region. However, at higher frequencies there is still a lack of relevant experimental…

Invisible dilaton

Brax, Philippe; Valageas, Patrick; Burrage, Clare +1 more

We analyze the dynamics of a light scalar field responsible for the µ term of the Higgs potential and coupled to matter via the Higgs-portal mechanism. We find that this dilaton model is stable under radiative corrections induced by the standard model particle masses. When the background value of the scalar field is stabilized at the minimum…

De la loi de la gravitation universelle à MICROSCOPE

Rodrigues, Manuel