2020-04-04T11:49:05Z
http://digital.csic.es/dspace-oai/request
oai:digital.csic.es:10261/9218
2017-01-25T12:31:35Z
com_10261_61
com_10261_4
col_10261_314
00925njm 22002777a 4500
dc
Boucaud, Ph.
author
Dimopoulos, P.
author
Farchioni, F.
author
Frezzotti, R.
author
Giménez Gómez, Vicente
author
Herdoiza, Gregorio
author
Jansen, K.
author
Lubicz, V.
author
Martinelli, G.
author
McNeile, C.
author
Michael, C.
author
Montvay, I.
author
Palao, David
author
Papinutto, M.
author
Pickavance, J.
author
Rossi, G. C.
author
Scorzato, L.
author
Shindler, Andrea
author
Simula, S.
author
Urbach, C.
author
Wenger, U.
author
2007-05-13
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.
Physics Letters B 650(4): 304-311 (2007)
0370-2693
http://hdl.handle.net/10261/9218
10.1016/j.physletb.2007.04.054
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
Dynamical twisted mass fermions with light quarks