The physics of strong interactions is invariant under the exchange of left-handed and righthanded quarks, at least in the massless limit. This invariance is reflected in the chiral symmetry of quantum chromodynamics. Surprisingly, it has become clear only recently how to implement this important symmetry in lattice formulations of quantum field theories. We will discuss realizations of exact la...

A regular charge-monopole theory is derived from simple and self-evident postulates. It is shown that this theory provides explanations for effects of strong and nuclear interactions. The theory is compared with Dirac’s monopole theory. Applications to strong and nuclear interactions are compared with quantum chromodynamics. The results favor the regular charge-monopole theory and indicate diff...