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Título: | Dynamical twisted mass fermions with light quarks |
Autor: | Boucaud, Ph.; Dimopoulos, P.; Farchioni, F.; Frezzotti, R.; Giménez Gómez, Vicente ![]() ![]() ![]() ![]() |
Palabras clave: | Chiral perturbation theory Monte Carlo algorithm Gross-Neveu model Yang-Mills theory Lattice QCD Wilson quarks HMC algorithm Gauge actions European Twisted Mass (ETM) Collaboration |
Fecha de publicación: | 13-may-2007 |
Editor: | Elsevier |
Citación: | Physics Letters B 650(4): 304-311 (2007) |
Resumen: | We present results of dynamical simulations of N-f = 2 degenerate Wilson twisted mass quarks at maximal twist in the range of pseudo scalar masses 300 MeV less than or similar to m(PS) less than or similar to 550 MeV. Reaching such small masses was made possible owing to a recently developed variant of the HMC algorithm. The simulations are performed at one value of the lattice spacing a less than or similar to 0.1 fm. In order to have O(a) improvement and aiming at small residual O(a^2) cutoff effects, the theory is tuned to maximal twist by requiring the vanishing of the untwisted quark mass. Precise results for the pseudo scalar decay constant and the pseudo scalar mass are confronted with chiral perturbation theory predictions and the low energy constants F, (l)[overline](3) and (l)[overline](4) are evaluated with small statistical errors. |
Descripción: | 8 pages, 3 figures.-- ISI Article Identifier: 000248138100016.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-lat/0701012 Printed version published Jul 5, 2007. |
Versión del editor: | http://dx.doi.org/10.1016/j.physletb.2007.04.054 |
URI: | http://hdl.handle.net/10261/9218 |
DOI: | 10.1016/j.physletb.2007.04.054 |
ISSN: | 0370-2693 |
Aparece en las colecciones: | (IFIC) Artículos |
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