Despite its great success, the Standard Model of particle physics has significant limitations. It does not account for the observed imbalance between matter and antimatter in the Universe, it cannot explain the nature of dark matter and dark energy, and it fails to incorporate gravity. Many extensions of the Standard Model, including models of dark matter, predict the existence of new particles with sub-MeV masses, interacting very weakly with ordinary matter. These particles could manifest through violations of discrete or Lorentz symmetries, temporal variations in fundamental constants, new forces, or as candidates for dark matter and dark energy. Precision experiments at low-energy and medium-scale facilities hold the potential to detect these phenomena. This workshop aims to foster collaborative approaches to low-energy tests of new physics in microwave, optical, atomic, nuclear, and condensed matter systems.
