2005/11/30 by Tanmoy Bhattacharya, Rajan Gupta, Weonjong Lee +2 · 4 citations
Mathematics · Physics and Astronomy · #Bilinear interpolation #Black Holes and Theoretical Physics #Computer science #Degenerate energy levels #Excited state #Extension (predicate logic) #Fermion #Lattice (music) #Lattice QCD #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Singlet state #hep-lat
paper · pdf · doi:10.1103/physrevd.73.034504
published as Phys.Rev. D73 (2006) 034504 · 49 pages, no figures; minor improvements in wording, further typos corrected, published version
arxiv created 2006/02/09 · openalex publication_date 2006/02/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We describe the extension of the improvement program for bilinear operators composed of Wilson fermions to nondegenerate dynamical quarks. We consider two, three and four flavors, and both flavor nonsinglet and singlet operators. We find that there are many more improvement coefficients than with degenerate quarks, but that, for three or four flavors, nearly all can be determined by enforcing vector and axial Ward identities. The situation is worse for two flavors, where many more coefficients remain undetermined.