Corpus ID: 119193746

Computing the Adler function from the vacuum polarization function

@article{Horch2013ComputingTA,
  title={Computing the Adler function from the vacuum polarization function},
  author={H. Horch and M. Morte and G. Herdoiza and B. Jager and A. Juttner and H. Wittig},
  journal={arXiv: High Energy Physics - Lattice},
  year={2013}
}
We use a lattice determination of the hadronic vacuum polarization tensor to study the associated Ward identities and compute the Adler function. The vacuum polarization tensor is computed from a combination of point-split and local vector currents, using two flavours of O($a$)-improved Wilson fermions. Partially twisted boundary conditions are employed to obtain a fine momentum resolution. The modifications of the Ward identities by lattice artifacts and by the use of twisted boundary… Expand
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