Speaker
Andrei Alexandru
(The George Washington University)
Description
Hadron polarizability are usually measured on the lattice using the
background field method. To create a uniform field one can use either
periodic boundary conditions that force the electromagnetic field to
assume quantized values or Dirichlet boundary conditions where the
field can assume any value but the translational invariance is broken.
In both cases, the energy shifts measured have finite volume
corrections that decay slowly with increasing lattice size. In this
talk we discuss these corrections and present results for electric
polarizability on different lattice sizes.
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Primary author
Andrei Alexandru
(The George Washington University)
Co-author
Frank Lee
(The George Washington University)