Novel approaches to dark-matter detection using space-time separated clocks

Etienne Savalle, Benjamin M Roberts, Florian Frank, Paul-Eric Pottie, Ben T McAllister, Conner B Dailey, Andrei Derevianko, Peter Wolf
[arXiv:1902.07192]

setup.png

We discuss the theoretical analysis and interpretation of space-time separated clock experiments in the context of a space-time varying scalar field that is non-universally coupled to the standard model fields. If massive, such a field is a candidate for dark matter and could be detected in laboratory experiments. We show that space-time separated experiments have the potential to probe a fundamentally different parameter space from more common co-located experiments, allowing decorrelation of previously necessarily correlated parameters. Finally, we describe such a space-time separated clock experiment currently running at the Paris Observatory, and present some preliminary results as a proof of principle.