Speaker
Fangcheng He
Description
In this talk, I will present recent progress in our lattice QCD calculation of the $\theta$-induced neutron electric dipole moment (nEDM) using the background electric field method. The signal for the nEDM can be enhanced by employing the Feynman–Hellmann theorem. I will also compare results obtained with different nucleon interpolating operators and discuss their effectiveness in suppressing excited-state contamination and improving the signal quality.