Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2000-06-16
Phys.Rev. D62 (2000) 094503
Physics
High Energy Physics
High Energy Physics - Lattice
26 pages, 12 figures (discussion on discretization errors at end of sec. IV clarified; minor improvements in presentation; res
Scientific paper
10.1103/PhysRevD.62.094503
We calculate various properties of pseudoscalar mesons in partially quenched QCD using chiral perturbation theory through next-to-leading order. Our results can be used to extrapolate to QCD from partially quenched simulations, as long as the latter use three light dynamical quarks. In other words, one can use unphysical simulations to extract physical quantities - in this case the quark masses, meson decay constants, and the Gasser-Leutwyler parameters L_4-L_8. Our proposal for determining L_7 makes explicit use of an unphysical (yet measurable) effect of partially quenched theories, namely the double-pole that appears in certain two-point correlation functions. Most of our calculations are done for sea quarks having up to three different masses, except for our result for L_7, which is derived for degenerate sea quarks.
Sharpe Stephen
Shoresh Noam
No associations
LandOfFree
Physical Results from Unphysical Simulations 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 Physical Results from Unphysical Simulations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Physical Results from Unphysical Simulations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-699873