High-precision scale setting in lattice QCD

Details High-precision scale setting in lattice QCD High-precision scale setting in lattice QCD

2012-03-20

arxiv.org/abs/1203.4469v1

Physics

High Energy Physics

High Energy Physics - Lattice

15 pages, 7 figures, 2 tables

Scientific paper

Scale setting is of central importance in lattice QCD. It is required to predict dimensional quantities in physical units. Moreover, it determines the relative lattice spacings of computations performed at different values of the bare coupling, and this is needed for extrapolating results into the continuum. Thus, we propose here a new method for setting the scale in lattice QCD calculations. It is cheap and straightforward to implement and compute. In particular, it does not involve the delicate fitting of correlation functions at asymptotic times. It typically can be determined on the few per-mil level. We compute its continuum extrapolated value in 2+1-flavor QCD for physical and non-physical pion and kaon masses, to allow for mass-independent scale setting even away from the physical mass point. We demonstrate its robustness by computing it with two very different actions (one of them with staggered, the other with Wilson fermions) and by showing that the results agree for physical quark masses in the continuum limit.

Affiliated with

Also associated with

No associations

Rating

High-precision scale setting in lattice QCD 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 High-precision scale setting in lattice QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-precision scale setting in lattice QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-495470