Chiral phase in fermionic measure and the resolution of the strong CP problem
arXiv:hep-th/0104186
Abstract
The fermionic measure in the functional integral of a gauge theory suffers from an ambiguity in the form of a chiral phase. By fixing it, one is led once again to the conclusion that a chiral phase in the quark mass term of QCD has no effect and cannot cause CP violation.
LaTeX, 5 pages: slightly expanded