Search Publications
Impact of the cosmic neutrino background on long-range force searches
Chauhan, Garv; Xu, Xun-Jie
Light bosons can mediate long-range forces. We show that light bosonic mediators interacting with a background medium, in particular, with the cosmic neutrino background (CνB), may induce medium-dependent masses which could effectively screen long-range forces from detection. This leads to profound implications for long-range force searches in e.g…
Platform and environment requirements of a satellite quantum test of the weak equivalence principle at the 10-17 level
Métris, Gilles; Struckmann, Christian; Corgier, Robin +6 more
The space-time explorer and quantum equivalence principle space test (STE-QUEST) recently proposed, aims at performing a precision test of the weak equivalence principle (WEP), a fundamental cornerstone of general relativity. Taking advantage of the ideal operation conditions for high-precision quantum sensing on board of a satellite, it aims to d…
Violation of the equivalence principle induced by oscillating rest mass and transition frequency, and its detection in atom interferometers
Wolf, Peter; Gué, Jordan; Hees, Aurélien
We present a theoretical investigation of the expected experimental signals produced by freely falling atoms with time oscillating mass and transition frequency. These oscillations could be produced in a variety of models, in particular, models of scalar dark matter nonuniversally coupled to the standard matter such as axionlike particles and dila…
Ytterbium atom interferometry for dark matter searches
Zhou, Yifan; Ranson, Rowan; Panagiotou, Michalis +1 more
We analyze the projected sensitivity of a laboratory-scale ytterbium atom interferometer to scalar, vector, and pseudoscalar dark matter signals. A frequency ratio measurement between two transitions in
Weak equivalence principle and nonrelativistic limit of general dispersion relations
Hohmann, Manuel; Pfeifer, Christian; Wagner, Fabian
We study the weak equivalence principle in the context of modified dispersion relations, a prevalent approach to quantum gravity phenomenology. We find that generic modified dispersion relations violate the weak equivalence principle. The acceleration in general depends on the mass of the test body, unless the Hamiltonian is either 2-homogeneous i…
Constraining light scalar field with torsion-balance gravity experiments
Qin, Cheng-Gang; Lu, Xiao-Yu; Zhao, Bing-Chen +5 more
The light scalar field with a coupling to standard model particles provide a possible source of the long-range Yukawa forces or violation of the weak equivalence principle, which can be potentially explored by precision gravity experiments. We describe the searches for such light scalar fields with the three types of gravity experiments, including…
Probing ultralight isospin-violating mediators at GW170817
Liu, Zuowei; Tang, Zi-Wei
Gravitational wave (GW) signals arising from binary neutron star mergers offer new, sensitive probes to ultralight mediators. Here we analyze the GW signals in the GW170817 event detected by the LIGO/Virgo collaboration to impose constraints on the ultralight isospin-violating mediator that has different couplings to protons and neutrons. Neutron …
Probing grand unification with quantum sensors
Calmet, Xavier; Sherrill, Nathaniel
We discuss how grand unification can be probed with experiments at low energies using quantum sensors. Specifically, we show that scalar multiplets coupled to the gauge sector of a grand unified theory provide a mechanism for a time-varying unified coupling which has low-energy consequences which can be probed with quantum sensors. We then assume …