2006/12/31 by S. Negishi, Shinichi Negishi, Hideo Matsufuru +2
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #hep-lat
paper · pdf · doi:10.1143/ptp.117.275
published as Prog.Theor.Phys.117:275-303,2007 · 30 pages, 25 figures, typos corrected
openalex publication_date 2007/02/01 · arxiv created 2007/02/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We compute the B* Bπ coupling ĝ∞ for the static heavy-light meson using all-to-all propagators. It is shown that low-mode averaging with 100 low-lying eigenmodes indeed significantly improves the signal for the 2-point and 3-point functions for heavy-light meson. Our study suggests that the all-to-all propagator is a very efficient method for the high precision computation of the B* Bπ coupling, especially in unquenched QCD, where the number of configurations is limited.