The pion form factor from twisted-mass lattice quantum chromodynamics1

The pion form factor offers insight into the transition from perturbative to nonperturbative quantum chromodynamics (QCD), and is of current experimental interest. Twisted-mass lattice QCD is a method for eliminating unphysical zero modes from Wilson lattice simulations; it also allows for removal o...

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Bibliographic Details
Published inCanadian journal of physics Vol. 84; no. 6/7; pp. 661 - 668
Main Authors Abdel-Rehim, Abdou M, Lewis, Randy
Format Journal Article
LanguageEnglish
Published Ottawa Canadian Science Publishing NRC Research Press 01.06.2006
Subjects
Algorithms
Atoms & subatomic particles
Matrix
Methods
Quantum theory
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Summary:The pion form factor offers insight into the transition from perturbative to nonperturbative quantum chromodynamics (QCD), and is of current experimental interest. Twisted-mass lattice QCD is a method for eliminating unphysical zero modes from Wilson lattice simulations; it also allows for removal of the leading lattice spacing artifacts through a momentum-averaging prescription. In our study of the pion form factor, we performed the first explicit computation with momentum averaging in twisted-mass lattice QCD, and the first use of the GMRES-DR algorithm for twisted fermion matrix inversion. [PUBLICATION ABSTRACT]
Bibliography:ObjectType-Article-2
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ISSN:0008-4204
1208-6045