Neutron-gravity interferometry experiment: testing Earth's rotating frequency fluctuations via neutron Berry's phases due to spin-rotation couplings

摘要

Neutron spin can be coupled to the Earth's rotating frequency. Once if theEarth's rotating frequency is time-dependent, then the neutron will acquire aBerry's topological phase (cyclic adiabatic geometric phase). So, a potentialmethod to investigate the Earth's time-varying rotating frequency by measuringthe phase difference between geometric phases of neutron spin polarizedvertically down and up is proposed.