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Title: Light hadron spectroscopy in quenched QCD
Author: Rowland, Paul Anthony
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 1997
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This thesis presents the ab initio calculation of masses of light hadrons composed of up, down and strange quarks in lattice QCD. The results are obtained from a series of simulations performed in the quenched approximation to lattice QCD, at different lattice spacings and lattice sizes, which enables us to extrapolate to zero lattice spacing, the continuum, and to estimate any finite-size effects. Our simulations employ the Wilson gauge field action, the Sheikholeslami-Wohlert O(a)-improved Wilson fermion action with two choices for the clover coefficient, and two lattice volumes. Comparisons are made where possible, with simulations from other groups using unimproved Wilson fermions to investigate the effects of improvement and to compare continuum results. Systematic errors in the calculation are investigated in detail. Finally a comparison is made between our results and experiment to estimate the effects of the quenched approximation.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available