Generalized parton distributions from lattice QCD

Abstract

This chapter gives an overview of the recent progress in extracting generalized parton distributions from lattice QCD. We briefly recall the theoretical principles of GPDs and explain the two most common lattice approaches, Ji's quasi-distributions and Radyushkin's pseudo-distributions. In the second part of the chapter, we review the lattice results obtained from these two frameworks. Finally, we offer a discussion of future prospects of lattice extractions of GPDs.

Comments: Invited chapter to the Encyclopedia of Nuclear Physics (Elsevier), 21 pages, 1 figure