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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

Masses, decay constants and electromagnetic form-factors with twisted boundary conditions

Author

  • Johan Bijnens
  • Johan Relefors

Summary, in English

Using Chiral Perturbation Theory at one-loop we analyze the consequences of twisted boundary conditions. We point out that due to the broken Lorentz and reflection symmetry a number of unexpected terms show up in the expressions. We explicitly discuss the pseudo-scalar octet masses, axial-vector and pseudo-scalar decay constants and electromagnetic form-factors. We show how the Ward identities are satisfied using the momentum dependent masses and the non-zero vacuum-expectation-values values for the electromagnetic (vector) currents. Explicit expressions at one-loop are provided and an appendix discusses the needed one-loop twisted finite volume integrals.

Department/s

  • Theoretical Particle Physics

Publishing year

2014

Language

English

Publication/Series

Journal of High Energy Physics

Issue

5

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • Lattice QCD
  • Chiral Lagrangians

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479