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arxiv 1008.2011 v1 pith:6WHDATD3 submitted 2010-08-11 hep-lat hep-phnucl-th

Nucleon Magnetic Moments and Electric Polarizabilities

classification hep-lat hep-phnucl-th
keywords electricmagneticnucleoncontributionsfieldslatticemomentspolarizabilities
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Electromagnetic properties of the nucleon are explored with lattice QCD using a novel technique. Focusing on background electric fields, we show how the electric polarizability can be extracted from nucleon correlation functions. A crucial step concerns addressing contributions from the magnetic moment, which affects the relativistic propagation of nucleons in electric fields. By properly handing these contributions, we can determine both magnetic moments and electric polarizabilities. Lattice results from anisotropic clover lattices are presented. Our method is not limited to the neutron; we show results for the proton as well.

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