With the establishment and maturation of the experimental programs searching for new
physics with sizeable couplings at the LHC, there is an increasing interest in the broader …

We review the landscape of QCD axion models. Theoretical constructions that extend the
window for the axion mass and couplings beyond conventional regions are highlighted and …

Axions and other very light axion-like particles appear in many extensions of the Standard
Model, and are leading candidates to compose part or all of the missing matter of the …

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 …

A bstract Strong constraints on the coupling of new light particles to the Standard Model
(SM) arise from their production in the hot cores of stars, and the effects of this on stellar …

Atom interferometers have been developed in the last three decades as new powerful tools
to investigate gravity. They were used for measuring the gravity acceleration, the gravity …

The status of experimental tests of general relativity and of theoretical frameworks for
analyzing them is reviewed and updated. Einstein's equivalence principle (EEP) is well …

The existence of a light or massive scalar field with a coupling to matter weaker than
gravitational strength is a possible source of violation of the weak equivalence principle. We …

A general introduction to surface and interfacial forces, perfectly combining theoretical
concepts, experimental techniques and practical applications. In this completely updated …

We demonstrate that short-period stars orbiting around the supermassive black hole in our
Galactic center can successfully be used to probe the gravitational theory in a strong regime …