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Precision computation of hadronic physics with lattice QCD is becoming feasible. The last decade has seen percent-level calculations of many simple properties of mesons, and the last few years have seen calculations of baryon masses, including the nucleon mass, accurate to a few percent. As computational power increases and algorithms advance, the precise calculation of a variety of more demanding hadronic properties will become realistic. With this in mind, I discuss the current lattice QCD calculations of generalized parton distributions with an emphasis on the prospects for well-controlled calculations for these observables as well. I will do this by way of several examples: the pion and nucleon form factors and moments of the nucleon parton and generalized-parton distributions.
The electromagnetic form factors of the proton and the neutron are computed within lattice QCD using simulations with quarks masses fixed to their physical values. Both connected and disconnected contributions are computed. We analyze two new ensembl
The magnetic dipole, the electric quadrupole and the Coulomb quadrupole amplitudes for the transition $gamma Nto Delta$ are evaluated both in quenched lattice QCD at $beta=6.0$ and using two dynamical Wilson fermions simulated at $beta=5.6$. The dipo
The magnetic dipole, the electric quadrupole and the Coulomb quadrupole amplitudes for the transition gamma Nto Delta are calculated in quenched lattice QCD at beta=6.0 with Wilson fermions. Using a new method combining an optimal combination of inte
Lattice simulations of QCD have produced precise estimates for the masses of the lowest-lying hadrons which show excellent agreement with experiment. By contrast, lattice results for the vector and axial vector form factors of the nucleon show signif
We present results on the nucleon axial form factors within lattice QCD using two flavors of degenerate twisted mass fermions. Volume effects are examined using simulations at two volumes of spatial length $L=2.1$ fm and $L=2.8$ fm. Cut-off effects a