Fast fits for lattice QCD correlators
Abstract
We illustrate a technique for fitting lattice QCD correlators to sums of exponentials that is significantly faster than traditional fitting methods—10-40 times faster for the realistic examples we present. Our examples are drawn from a recent analysis of the Υ spectrum, and another recent analysis of the D→π semileptonic form factor. For single correlators, we show how to simplify traditional effective-mass analyses.
- Publication:
-
Physical Review D
- Pub Date:
- February 2012
- DOI:
- 10.1103/PhysRevD.85.031504
- arXiv:
- arXiv:1111.1363
- Bibcode:
- 2012PhRvD..85c1504H
- Keywords:
-
- 11.15.Ha;
- 12.38.Gc;
- Lattice gauge theory;
- Lattice QCD calculations;
- High Energy Physics - Lattice
- E-Print:
- 5 pages, 4 figures