Cover Image

Going chiral: overlap versus twisted mass fermions

We compare the behavior of overlap fermions, which are chirally invariant, and of Wilson twisted mass fermions at full twist in the approach to the chiral limit. Our quenched simulations reveal that with both formulations of lattice fermions pion masses of 𝒪(250 MeV) can be reached in practical appl...

Full description

Saved in:
Bibliographic Details
Main Authors: Bietenholz, Wolfgang (Author) , Capitani, S. (Author) , Chiarappa, T. (Author) , Christian, N. (Author) , Hasenbusch, Martin (Author) , Jansen, K. (Author) , Nagai, K.-I. (Author) , Papinutto, M. (Author) , Scorzato, L. (Author) , Shcheredin, S. (Author) , Shindler, A. (Author) , Urbach, C. (Author) , Wenger, U. (Author) , Wetzorke, I. (Author)
Format: Article (Journal)
Language:English
Published: 2004
In: Journal of high energy physics
Year: 2004, Issue: 12, Pages: 1-22
ISSN:1029-8479
DOI:10.1088/1126-6708/2004/12/044
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1088/1126-6708/2004/12/044
Get full text
Author Notes:XLF collaboration: Wolfgang Bietenholz, Stefano Capitani, Thomas Chiarappa, Nils Christian, Martin Hasenbusch, Karl Jansen, Kei-Ichi Nagai, Mauro Papinutto,Luigi Scorzato, Stanislav Shcheredin, Andrea Shindler, Carsten Urbach, Urs Wengerc and Ines Wetzorke
Description
Summary:We compare the behavior of overlap fermions, which are chirally invariant, and of Wilson twisted mass fermions at full twist in the approach to the chiral limit. Our quenched simulations reveal that with both formulations of lattice fermions pion masses of 𝒪(250 MeV) can be reached in practical applications. Our comparison is done at a fixed value of the lattice spacing a ≃ 0.123 fm. A number of quantities are measured such as hadron masses, pseudoscalar decay constants and quark masses obtained from Ward identities. We also determine the axial vector renormalization constants in the case of overlap fermions.
Item Description:Published 17 January 2005
Gesehen am 05.07.2022
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1088/1126-6708/2004/12/044

Similar Items