Type

Conference Proceedings

Authors

Michael Peardon

Subjects

Mathematics

Topics
spectroscopy exact propagators hadronic correlation functions quark propagators noise stochastic methods lattice algorithm

A novel method for evaluating correlation functions in lattice hadron spectroscopy (2010)

Abstract We describe a new approach for evaluating hadronic correlation functions which combines Laplacian-Heaviside quark smearing with a stochastic estimator of quark propagators. This method utilizes noise dilution in a new way to reduce the variance in correlators. The efficacy of the new algorithm is demonstrated on a number of systems, including disconnected diagrams and multi-hadron correlators, on a small lattice where comparisons with the results obtained with exactly determined quark propagators are possible. On larger lattice volumes, the use of exact propagators becomes prohibitively expensive, while the stochastic method is still computationally feasible.
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Full list of authors on original publication

Michael Peardon

Experts in our system

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Michael James Peardon
Trinity College Dublin
Total Publications: 64