The 34th International Symposium on Lattice Field Theory (Lattice 2016)

Jul 24 – 30, 2016
Highfield Campus, University of Southampton
Europe/London timezone

Utilising optimised operators and distillation to extract scattering phase shifts

Jul 26, 2016, 2:40 PM
20m
Bulding B2a Room 2065 (Highfield Campus, University of Southampton)

Speaker

Mr Antoni Woss (University of Cambridge)

Description

Distillation is a method of smearing that allows for the efficient computation of correlation functions on the lattice. It vastly reduces the number of operations needed to calculate correlation functions with large bases of operators and all-to-all propagators. In this investigation, we provide a comprehensive comparison of the quality of extracted energy spectra with different amounts of distillation smearing for the isospin-1 $\pi\pi$, $\rho$ like channel. Results are demonstrated in the determination of the mass spectra and also the scattering phase shift and mass and width of the resonant $\rho$ via the Luscher method.

Primary author

Mr Antoni Woss (University of Cambridge)

Co-author

Dr Christopher Thomas (University of Cambridge)

 Slides