Dynamical QCD simulation with theta terms

Abstract

The theta term that breaks the Strong CP symmetry is introduced in the two flavors of dynamical QCD simulation. theta is analytically continued to a pure imaginary number to make the probability of Monte Carlo positive. The Neutron's Electric Dipole Moment (NEDM) is measured on the ensemble under a uniform and week electric field. Other applications of theta terms are also discussed.

Comments: 8 pages, 3 figures, talk given by Taku Izubuchi at the XXV International Symposium on Lattice Field Theory, Regensburg, Germany, 30 July - 4 August 2007