Perturbative matching of staggered four-fermion operators with hypercubic fat links

Details Perturbative matching of staggered four-fermion operators with hypercubic fat links Perturbative matching of staggered four-fermion operators with hypercubic fat links

2003-06-13

arxiv.org/abs/hep-lat/0306016v2

Phys.Rev. D68 (2003) 054510

Physics

High Energy Physics

High Energy Physics - Lattice

37 pages, no figure, 20 tables

Scientific paper

10.1103/PhysRevD.68.054510

We calculate the one-loop matching coefficients between continuum and lattice four-fermion operators for lattice operators constructed using staggered fermions and improved by the use of fattened links. In particular, we consider hypercubic fat links and SU(3) projected Fat-7 links, and their mean-field improved versions. We calculate only current-current diagrams, so that our results apply for operators whose flavor structure does not allow ``eye-diagrams''. We present general formulae, based on two independent approaches, and give numerical results for the cases in which the operators have the taste (staggered flavor) of the pseudo-Goldstone pion. We find that the one-loop corrections are reduced down to the 10-20% level, resolving the problem of large perturbative corrections for staggered fermion calculations of matrix elements.

Affiliated with

Also associated with

No associations

Rating

Perturbative matching of staggered four-fermion operators with hypercubic fat links does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Perturbative matching of staggered four-fermion operators with hypercubic fat links, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perturbative matching of staggered four-fermion operators with hypercubic fat links will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-26560