Signal/noise optimization strategies for stochastically estimated correlation functions
Name
LATTICE2014_170.pdf
Size
846.13 KB
Format
Adobe PDF
Checksum (MD5)
b03f411736466d39c0ec4f8d5d2d1459
Author(s)
Detmold, William
Endres, Michael G
Date Issued
May 2015
Journal
Proceedings of The 32nd International Symposium on Lattice Field Theory — PoS(LATTICE2014)
Publisher
Sissa Medialab
Citation
Endres, Michael, and William Detmold. “Signal/noise Optimization Strategies for Stochastically Estimated Correlation Functions.” In Proceedings of The 32nd International Symposium on Lattice Field Theory, PoS(LATTICE2014) (May 21, 2015).
Version
Final published version
Abstract
Numerical studies of quantum field theories usually rely upon an accurate determination of stochastically estimated correlation functions in order to extract information about the spectrum of the theory and matrix elements of operators. The reliable determination of such correlators is often hampered by an exponential degradation of signal/noise at late time separations. We demonstrate that it is sometimes possible to achieve significant enhancements of signal/noise by appropriately optimizing correlators with respect to the source and sink interpolating operators, and highlight the large range of possibilities that are available for this task. The ideas are discussed for both a toy model, and single hadron correlators in the context of quantum chromodynamics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.22323/1.214.0170
