https://doi.org/10.1140/epjc/s10052-010-1438-8
Fitting a sum of exponentials to lattice correlation functions using a non-uniform prior
Alphawave Research, Atlanta, GA, 30238, USA
robjohnson@alphawaveresearch.com
Received:
5
April
2010
Revised:
16
August
2010
Published online:
30
September
2010
Excited states are extracted from lattice correlation functions using a non-uniform prior on the model parameters. Models for both a single exponential and a sum of exponentials are considered, as well as an alternate model for the orthogonalization of the correlation functions. Results from an analysis of torelon and glueball operators indicate the Bayesian methodology compares well with the usual interpretation of effective mass tables produced by a variational procedure. Applications of the methodology are discussed.
© Springer-Verlag / Società Italiana di Fisica, 2010
