This article reviews recent developments in tests of fundamental physics using atoms and
molecules, including the subjects of parity violation, searches for permanent electric dipole …

Einstein's general theory of relativity from 1915 1 remains the most successful description of
gravitation. From the 1919 solar eclipse 2 to the observation of gravitational waves 3, the …

The ALPHA experiment has recently entered an expansion phase of its experimental
programme, driven in part by the expected benefits of conducting experiments in the …

Charged lepton system symmetry under combined charge, parity, and time-reversal
transformation (CPT) remains scarcely tested. Despite stringent quantum-electrodynamic …

The photon—the quantum excitation of the electromagnetic field—is massless but carries
momentum. A photon can therefore exert a force on an object upon collision. Slowing the …

In 1928, Dirac published an equation that combined quantum mechanics and special
relativity. Negative-energy solutions to this equation, rather than being unphysical as initially …

Antihydrogen atoms with K or sub-K temperature are a powerful tool to precisely probe the
validity of fundamental physics laws and the design of highly sensitive experiments needs …

Abstract The Facility for Antiproton and Ion Research (FAIR) will be the accelerator-based
flagship research facility in many basic sciences and their applications in Europe for the …

When Kai Zuber's pioneering text on neutrinos was published in 2003, the author correctly
predicted that the field would see tremendous growth in the immediate future. In that book …

Abstract At the historic Shelter Island Conference on the Foundations of Quantum
Mechanics in 1947, Willis Lamb reported an unexpected feature in the fine structure of …