Speaker
Michael Abramczyk
(University of Connecticut)
Description
We will present preliminary findings on improving the lattice calculation of the neutron electric dipole moment from the θ term in QCD. The neutron EDM is highly correlated with the lowest lying modes of the Dirac operator. We take advantage of this with a full volume sampling for the low mode part of the quark propagator in order to increase statistics. This augments the all-mode averaging technique using a large number of sources for each configuration. We use the method of measuring the energy shift of the two-point correlation function in a uniform background electric field. Initial results are for a $16^3 \times 32$ ensemble of domain-wall fermions at $m_{\pi}$ = 420 MeV.
Primary author
Michael Abramczyk
(University of Connecticut)
Co-authors
Thomas Blum
Taku Izubuchi
(Brookhaven National Laboratory)
Hiroshi Ohki
Sergey Syritsyn
(Stony Brook University)
