The U(1) and Strong CP Problem From the Loop Formulation Perspective

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55203We show how the gauge invariant formulation of QCD in terms of loops is free from a hidden $θ$ parameter and offers an alternative way to solve the $U(1)_A$ puzzle.4 pages, revtexHigh Energy Physics - TheoryThe U(1) and Strong CP Problem From the Loop Formulation Perspectivetext