Speakers
Frank Lee
(George Washington University)
Walter Wilcox
(Baylor University)
Description
We show how to compute electromagnetic polarizabilities of charged hadrons on the lattice without using background fields. The low-energy behavior of the Compton scattering amplitude is matched to matrix elements of current-current four point functions. Working in momentum space, formulas for electric polarizability and magnetic polarizability are derived for both charged pion and proton. Lattice four-point correlation functions are constructed from quark and gluon fields to be used in Monte-Carlo simulations. The content of the functions is assessed in detail and specific prescriptions are given to isolate the polarizabilities.
Author
Frank Lee
(George Washington University)
Co-author
Walter Wilcox
(Baylor University)
