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arXiv · hep-lat/9406009

Calculation and Interpretation of Hadron Correlation Functions in Lattice QCD

J. W. Negele·M. Burkardt·J. M. Grandy
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Abstract

Several new developments in the calculation and interpretation of hadron density-density correlation functions are presented. The asymptotic behavior of correlation functions is determined from a tree diagram path integral. A method is developed to use this behavior to correct for leading image contributions on a finite periodic spatial lattice and to correct for the finite temporal extent of the lattice. Equal time correlation functions are shown to determine a sum of the ground state rms radius plus a polarization correction, and it is shown how to extract the hadron polarizability from unequal time correlation functions. Image-corrected correlation functions calculated in quenched lattice QCD are presented and used to determine the size of the pion and nucleon.

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J. W. Negele, M. Burkardt, J. M. Grandy. 1994-06-15. Calculation and Interpretation of Hadron Correlation Functions in Lattice QCD. https://doi.org/10.1006/aphy.1995.1026

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