On the N_fdependence of gluonic observables
Abstract
We compute $t_0$, $w_0$ and the topological susceptibility, defined at finite gradient flow time for twoflavour QCD. The use of three lattice spacings and pion masses between 192 and 500 MeV together with a careful error analysis allow to approach the continuum limit of the twoflavour theory despite significant autocorrelations. A comparison to $N_f=0$ results shows the size of sea quark effects in $t_0^2\chi$, with $\chi$ the topological susceptibility, and low energy observables such as $t_0/w_0^2$ and $t_0/r_0^2$.
 Publication:

Proceedings of the 31st International Symposium on Lattice Field Theory (LATTICE 2013). 29 July3 August
 Pub Date:
 2013
 arXiv:
 arXiv:1311.5585
 Bibcode:
 2013slft.confE.321B
 Keywords:

 High Energy Physics  Lattice
 EPrint:
 Corrected comparison of autocorrelations between open and periodic BC