On-shell-improved lattice QCD with staggered fermions
- Columbia University, Department of Physics, New York, New York 10027 (United States)
By using Symanzik{close_quote}s improvement program, we study on-shell-improved lattice QCD with staggered fermions. We find that there are as many as 15 independent lattice operators of dimension 6 (including both gauge and fermion operators) which must be added to the unimproved action to form an O(a{sup 2})-improved action. Among them, the total number of dimension-6 gauge operators and fermion bilinears is 5. The other ten terms are four-fermion operators. At the tree level and tadpole-improved tree level, all ten four-fermion operators are absent. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 566105
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 57; ISSN 0556-2821; ISSN PRVDAQ
- Country of Publication:
- United States
- Language:
- English
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