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17 papers · 2 filters
Progress in three-particle scattering from LQCD
Raúl A. Briceño, Maxwell T. Hansen, Stephen R. Sharpe
We present the status of our formalism for extracting three-particle scattering observables from lattice QCD (LQCD). The method relies on relating the discrete finite-volume spectr…
Complex Langevin simulations of a finite density matrix model for QCD
Jacques Bloch, Jonas Glesaaen, Owe Philipsen +2
We study a random matrix model for QCD at finite density via complex Langevin dynamics. This model has a phase transition to a phase with nonzero baryon density. We study the conve…
On the Feynman-Hellmann Theorem in Quantum Field Theory and the Calculation of Matrix Elements
Chris Bouchard, Chia Cheng Chang, Thorsten Kurth +2
The Feynman-Hellmann theorem can be derived from the long Euclidean-time limit of correlation functions determined with functional derivatives of the partition function. Using this…
Quasi parton distributions and the gradient flow
Christopher Monahan, Kostas Orginos
We propose a new approach to determining quasi parton distribution functions (PDFs) from lattice quantum chromodynamics. By incorporating the gradient flow, this method guarantees…
Role of the strange quark in the rho(770) meson
R. Molina, D. Guo, B. Hu +2
Recently, the GWU lattice group has evaluated high-precision phase-shift data for scattering in the , channel. Unitary Chiral Perturbation Theory describes thes…
Isovector charges of the nucleon from 2+1-flavor QCD with clover fermions
Boram Yoon, Yong-Chull Jang, Rajan Gupta +8
We present high-statistics estimates of the isovector charges of the nucleon from four 2+1-flavor ensembles generated using Wilson-clover fermions with stout smearing and tree-leve…