Commutation of Axial Charge with Axial Divergence
نویسندگان
چکیده
منابع مشابه
Axial and tensor charge of the nucleon with dynamical fermions
Lattice QCD offers the possibility to investigate the internal structure of the nucleon without additional model assumptions. In particular, one can study how the mass, the axial charge and further properties of the nucleon change when the quark mass is varied or the nucleon is squeezed into a finite spatial box. Even if we could simulate at the physical quark mass and in a huge volume, we woul...
متن کاملNucleon axial charge in full lattice QCD.
The nucleon axial charge is calculated as a function of the pion mass in full QCD. Using domain wall valence quarks and improved staggered sea quarks, we present the first calculation with pion masses as light as 354 MeV and volumes as large as (3.5 fm)3. We show that finite volume effects are small for our volumes and that a constrained fit based on finite volume chiral perturbation theory agr...
متن کاملNucleon axial charge and structure functions with domain wall fermions
Domain wall fermions (DWF) [1] have been successfully used by the RBC Collaboration for several applications [2]. In the baryon sector we had reported that DWF with Wilson gauge action in the quenched approximation can reproduce the first negative-parity excited state of nucleon [3] which defied theoretical attempts for a long time. Here we report the current status of our calculations on the n...
متن کاملCalculation of the nucleon axial charge in lattice QCD
Protons and neutrons have a rich structure in terms of their constituents, the quarks and gluons. Understanding this structure requires solving Quantum Chromodynamics (QCD). However QCD is extremely complicated, so we must numerically solve the equations of QCD using a method known as lattice QCD. Here we describe a typical lattice QCD calculation by examining our recent computation of the nucl...
متن کاملDivergence Conditions for Vector and Axial Vector Currents
Equations for the divergence of the vector and axial-vector currents follow from the assumptions of Lorentz invariance, locality, the chiral SU(3) X SU(3) algebra of current densities (time components), and the usual electromagnetic and weak Hamiltonians. The divergence conditions lead to derivations of the low-energy meson theorems which do not involve " Schwinger " terms.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1972
ISSN: 0033-068X
DOI: 10.1143/ptp.47.735