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 …

Projecting measurements of the interactions of the known Standard Model (SM) states into
an effective field theory (EFT) framework is an important goal of the LHC physics program …

The interplay of quantum anomalies with magnetic field and vorticity results in a variety of
novel non-dissipative transport phenomena in systems with chiral fermions, including the …

The topological θ-angle is central to several gauge theories in condensed-matter and high-
energy physics. For example, it is responsible for the strong CP problem in quantum …

Most of the free parameters in the Standard Model (SM)—a quantum field theory which has
successfully elucidated the behaviors of strong, weak and electromagnetic interactions of all …

Abstract When the Standard Model is considered as an effective low-energy theory, higher
dimensional interaction terms appear in the Lagrangian. Dimension-six terms have been …

We review observational evidence for a matter–antimatter asymmetry in the early universe,
which leads to the remnant matter density we observe today. We also discuss bounds on the …

Searches for the permanent electric dipole moments (EDMs) of molecules, atoms, nucleons
and nuclei provide powerful probes of CP violation both within the Standard Model and …

The Quantum Theory of Fields, first published in 1996, is a self-contained, comprehensive
introduction to quantum field theory from Nobel Laureate Steven Weinberg. Volume II gives …

It is pointed out that a global U (1) symmetry, that has been introduced in order to preserve
the parity and time-reversal invariance of strong interactions despite the effects of instantons …