Lattice studies of hadron physics with disconnected quark loops

Abstract

Disconnected diagrams give crucial contributions to the physics of flavor singlet hadrons and to scalar form factors of non-singlet hadrons. Naive lattice calculation of the disconnected diagrams, however, requires a huge number of fermion matrix inversions and hence a prohibitively large computational cost. In this article, we present recent studies of the flavor-singelt meson spectrum and nucleon strange quark content using the all-to-all propagator to calculate the relevant disconnected diagrams.

Comments: 4pages, talk presented at 35th International Conference of High Energy Physics (ICHEP 2010), July 22-28, 2010, Paris, France