Disconnected quark loop contributions to nucleon observables using $N_f=2$ twisted clover fermions at the physical value of the light quark mass

Abstract

We compute the disconnected quark loops contributions entering the determination of nucleon observables, by using a $N_f=2$ ensemble of twisted mass fermions with a clover term at a pion mass $m_{\pi }=133$ MeV. We employ exact deflation and implement all calculations in GPUs, enabling us to achieve large statistics and a good signal.

Comments: 7 pages, 5 figures, presented at the 33rd International Symposium on Lattice Field Theory, 14 -18 July 2015, Kobe, Japan, PoS(LATTICE 2015)136