Computation of disconnected contributions to nucleon observables
Date
2013Publisher
Proceedings of Science (PoS)Source
Proceedings of Science31st International Symposium on Lattice Field Theory, LATTICE 2013
Volume
29-July-2013Google Scholar check
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We compare several methods for computing disconnected fermion loops contributing to nucleon three-point functions. The comparison is carried out using one ensemble of Nf =2+1+1 twisted mass fermions with pion mass of 373 MeV. The complete set of operators up to one-derivative are examined by developing optimized code for mutli-GPUS. Simple guidelines are given as to the preferable method for each class of operators.