William Detmold
(Jefferson Laboratory)
15/06/2010, 16:40
Hadron spectroscopy
Recent developments in calculations of systems of large numbers of mesons are presented.
A recursive algorithm is developed to calculate correlation functions for systems involving
very large numbers of mesons. This algorithm scales linearly in the number of mesons and
allows for previous calculations of n<13 meson systems to be extended. Recent numerical
investigations of the spectrum...
Justin Foley
(Carnegie Mellon University)
15/06/2010, 17:00
Hadron spectroscopy
We describe a new method for evaluating hadronic correlation functions, which combines Laplacian Heaviside (Laph) quark-field smearing with a stochastic estimator. The algorithm utilizes noise dilution in a new way to reduce the variance in euclidean-time correlators. This approach to correlator evaluation facilitates precision studies of the hadron spectrum, including flavor-singlet mesons...
Chik Him Wong
(Carnegie Mellon University)
15/06/2010, 17:20
Hadron spectroscopy
A novel algorithm which combines the LapH method of evaluating quark-field propagation with a stochastic estimator is tested on a range of hadronic correlators. The results demonstrate the advantage of this new method over the ordinary LapH method, particularly for the evaluation of flavor-singlet meson and multi-particle correlators, which are challenging for the ordinary LapH method. Future...
Keisuke Juge
(University of the Pacific)
15/06/2010, 17:40
Hadron spectroscopy
The pion-pion scattering phase shift on anisotropic, dynamical lattices will be presented. The LapH method for computing quark propagators is used to form the two-particle correlation function with a number of different operators. The phase shift is computed using Luescher's finite volume method for pion masses near 390 MeV on 2+1 dynamical lattices.
