We present the results of a reweighting calculation to compute the contribution of the charged quark sea to the neutron electric polarizability. The chief difficulty is the stochastic estimation of weight factors, and we present a hopping parameter expansion-based technique for reducing the stochastic noise, along with a discussion of why this particular reweighting is so difficult. We used this technique to estimate weight factors for 300 configurations of nHYP-clover fermions and compute the neutron polarizability, but the reweighting greatly inflates the overall statistical error, driven by the stochastic noise in the weight factors.
|Original language||English (US)|
|Journal||Proceedings of Science|
|State||Published - 2013|
|Event||31st International Symposium on Lattice Field Theory, LATTICE 2013 - Mainz, Germany|
Duration: Jul 29 2013 → Aug 3 2013
ASJC Scopus subject areas