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Non-perturbative renormalization of local operators in lattice QCD
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
2016 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Lattice QCD provides a framework for performing numerical simulations of quantum

chromodynamics. In lattice QCD—as a step towards obtaining quantities which can

be compared with experiment—it is in general necessary to determine

renormalization factors for the operators being studied. In this master thesis, the

renormalization factors for several local operators are determined non-perturbatively

in lattice QCD, by utilizing the RI'–MOM scheme. Numerical simulations are

performed for a wide range of quark masses which allow for the chiral limit to be

taken. As an essential step in the calculation, a subtraction of leading lattice artifacts is

performed by utilizing (boosted) lattice perturbation theory at one loop. The final

renormalization factors are presented in the RGI scheme, for several values of the

inverse coupling: ß = 5.20, 5.30 and 5.50.

Place, publisher, year, edition, pages
UPTEC F, ISSN 1401-5757 ; 16024
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-296427OAI: oai:DiVA.org:uu-296427DiVA: diva2:938186
Educational program
Master Programme in Engineering Physics
Available from: 2016-06-22 Created: 2016-06-16 Last updated: 2016-06-22Bibliographically approved

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