1993/01/15 by Colin Morningstar, Colin J. Morningstar · 49 citations
Physics and Astronomy · #Gluon #High-Energy Particle Collisions Research #Lattice QCD #Lattice field theory #Mathematical physics #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quark #Quark–gluon plasma #Renormalization #Renormalization group #Self-energy #Tadpole (physics) #hep-lat #nucl-th
paper · pdf · doi:10.1103/physrevd.48.2265
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 48(5), 2265-2278 (American Physical Society) · 28 pages, SLAC-PUB-5981
arxiv created 1993/01/15 · openalex publication_date 1993/09/01 · arxiv updated 2010/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The heavy-quark self-energy in nonrelativistic lattice QCD is calculated to O(\ensuremathαs) in perturbation theory. The heavy-quark action includes all spin-independent relativistic corrections to order v2, where v is the typical heavy-quark velocity, and all spin-dependent corrections to order v4. The standard Wilson action and an improved multiplaquette action are used for the gluons. Results for the mass renormalization, wave function renormalization, and energy shift are given; tadpole contributions are found to be large. A tadpole improvement scheme in which all link variables are rescaled by a mean-field factor is also studied. The effectiveness of this scheme in offsetting the large tadpole contributions to the heavy-quark renormalization parameters is demonstrated.