PoS - Proceedings of Science
Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
QED with massive photons for precision physics: zero modes and first result for the hadron spectrum
M. Clark, M. Della Morte, Z. Hall, B. Hörz, A. Nicholson, A. Shindler, J.T. Tsang*, A. Walker-Loud and H. Yan
Full text: pdf
Pre-published on: May 16, 2022
Published on:
The current precision reached by lattice QCD calculations of low-energy hadronic observables, requires not only the introduction of electromagnetic corrections, but also control over all the potential systematic uncertainties introduced by the lattice version of QED. Introducing a massive photon as an infrared regulator in lattice QED, provides a well defined theory, dubbed QEDM, amenable to numerical evaluation [1]. The photon mass is removed through extrapolation. In
this contribution we scrutinise aspects of QEDM such as the presence and fate of the zero modes contributions and we describe the determination of the photon mass corrections in finite and infinite
volume. We demonstrate that the required extrapolations are well controlled using numerical data obtained on two ensembles which only differ in volume.
DOI: https://doi.org/10.22323/1.396.0281
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.