Advanced

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

Bijnens, Johan LU and Relefors, Johan LU (2014) In Journal of High Energy Physics
Abstract
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.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Lattice QCD, Chiral Lagrangians
in
Journal of High Energy Physics
issue
5
publisher
Springer
external identifiers
  • wos:000347846500007
  • scopus:84901453417
ISSN
1126-6708
DOI
10.1007/JHEP05(2014)015
language
English
LU publication?
yes
id
adb72e86-e881-4f3f-b6dc-3a553fcd8709 (old id 5075921)
date added to LUP
2015-02-25 16:48:27
date last changed
2017-10-01 03:26:35
@article{adb72e86-e881-4f3f-b6dc-3a553fcd8709,
  abstract     = {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.},
  articleno    = {015},
  author       = {Bijnens, Johan and Relefors, Johan},
  issn         = {1126-6708},
  keyword      = {Lattice QCD,Chiral Lagrangians},
  language     = {eng},
  number       = {5},
  publisher    = {Springer},
  series       = {Journal of High Energy Physics},
  title        = {Masses, decay constants and electromagnetic form-factors with twisted boundary conditions},
  url          = {http://dx.doi.org/10.1007/JHEP05(2014)015},
  year         = {2014},
}