Highly-improved lattice field-strength tensor

Abstract

We derive an O(a^4)-improved lattice version of the continuum field-strength tensor. Discretization errors are reduced via the combination of several clover terms of various sizes, complemented by tadpole improvement. The resulting improved field-strength tensor is used to construct O(a^4)-improved topological charge and action operators. We compare the values attained by these operators as we cool several configurations to self-duality with a previously defined highly-improved action and assess the relative scale of the remaining discretization errors.

22 pages, 7 postscript figures

References in corpus (5)

• Hadron Masses From Novel Fat-Link Fermion Actions
• Improved Smoothing Algorithms for Lattice Gauge Theory
• Cooling for instantons and the Wrath of Nahm
• Numerical study of lattice index theorem usingimproved cooling and overlap fermions
• FLIC-Overlap Fermions and Topology

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