منابع مشابه
Improved lattice actions
The idea to improve lattice actions [1,2] is nearly as old as the use of lattices in regularizing field theories [3]. Nevertheless, until recently numerical simulations were performed mostly with the simplest (standard) form of lattice actions. This attitude seems to have been altered — at this conference there were probably more contributions using some kind of improved action than the standar...
متن کاملGlueballs from Improved Lattice Actions
Glueballs and hybrid mesons are presently of great interest theoretically and experimentally. The lattice formulation of QCD provides an ideal setting in which to carry out theoretical studies of such systems from first principles using sophisticated numerical simulations. In order to extract the physical properties of glueballs and hybrid mesons from such simulations, systematic errors from th...
متن کاملImproved Lattice Qcd Actions for Hadron Phenomenology
The masses and dispersions of light hadrons are calculated in lattice QCD using an O(a) tadpole-improved gluon action and the Dχ34 action, an O(a) tadpoleimproved next-nearest-neighbor fermion action originally proposed by Hamber and Wu. Two lattices of constant volume with lattice spacings of approximately 0.40 fm and 0.24 fm are considered. The results reveal some scaling violations at the co...
متن کاملImproved Quark Actions for Lattice Qcd
In the last few years it has become clear that there are a variety of gluon actions that give accurate results on coarse lattices (a = 0.2 − 0.4 fm); see various contributions to Lattice 96. Such actions have been constructed within the Symanzik improvement program, eliminating O(a) errors using tadpole improvement 2 at treeand at one-loop level, as well as within the MCRG (or “perfect action”)...
متن کاملTuning improved anisotropic actions in lattice perturbation theory
We discuss the tuning of the anisotropic clover action and Symanzik-improved gauge action in lattice perturbation theory. The fermion action is constructed from stout-smeared spatial links, which complicates the calculation considerably. In addition, the full quark-mass dependence of the action parameters is included in this study. We present results for the fermion and gauge aspect ratios for ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1997
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(96)00599-3