Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2003-10-03
Phys.Rev. D69 (2004) 054027
Physics
High Energy Physics
High Energy Physics - Lattice
13 pages, 11 figures Version 2: Additional footnote and parenthesis in section V
Scientific paper
10.1103/PhysRevD.69.054027
We point out that the chiral Lagrangian describing pseudo-Goldstone bosons in partially quenched QCD has one more four-derivative operator than that for unquenched QCD with three flavors. The new operator can be chosen to vanish in the unquenched sector of the partially quenched theory. Its contributions begin at next-to-leading order in the chiral expansion. At this order it contributes only to unphysical scattering processes, and we work out some examples. Its contributions to pseudo-Goldstone properties begin at next-to-next-to-leading order, and we determine their form. We also determine all the zero and two derivative operators in the $O(p^6)$ partially quenched chiral Lagrangian, finding three more than in unquenched QCD, and use these to give the general form of the analytic next-to-next-to-leading order contributions to the pseudo-Goldstone mass and decay constant. We discuss the general implications of such additional operators for the utility of partially quenched simulations
de Water Ruth S. Van
Sharpe Stephen R.
No associations
LandOfFree
Unphysical Operators in Partially Quenched 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 Unphysical Operators in Partially Quenched QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unphysical Operators in Partially Quenched QCD will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-571099