One-Loop Self Energy and Renormalization of the Speed of Light for some Anisotropic Improved Quark Actions
Stefan Groote, Junko Shigemitsu
Abstract
One-loop corrections to the fermion rest mass M1, wave function renormalization Z2 and speed of light renormalization C0 are presented for lattice actions that combine improved glue with clover or D234 quark actions and keep the temporal and spatial lattice spacings, at and as, distinct. We explore a range of values for the anisotropy parameter χ= as/at and treat both massive and massless fermions.
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