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NUCLEAR PHYSICS B
Volume 960, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nuclphysb.2020.115181
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For a proton in the infinite momentum frame, its wave function contains a zero-momentum part (light-front zero-modes) originated from the modification of the QCD vacuum in the presence of the valence quarks, exhibiting a light-front long-range order in the quantum state. This non-travelling component of the proton contributes to its fundamental properties, including the mass and spin, as well as the naive-time-reversal-odd correlations between transverse momentum and spin. The large momentum effective theory (LaMET) provides a theoretical approach to study the physical properties of the proton's zero-mode condensate through lattice simulations. (C) 2020 The Author(s). Published by Elsevier B.V.
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