Zobrazeno 1 - 10
of 282
pro vyhledávání: '"Luescher, M."'
We report on the first master-field simulations of QCD with 2+1 dynamical quark flavours using non-perturbatively improved stabilised Wilson fermions. Our simulations are performed at a lattice spacing of 0.094 fm with 96 and 192 points in each direc
Externí odkaz:
http://arxiv.org/abs/2111.11544
Publikováno v:
JHEP 0702:082,2007
In this second report on our recent numerical simulations of two-flavour QCD, we provide further technical details on the simulations and describe the methods we used to extract the meson masses and decay constants from the generated ensembles of gau
Externí odkaz:
http://arxiv.org/abs/hep-lat/0701009
Publikováno v:
JHEP 0702:056,2007
Recent conceptual, algorithmic and technical advances allow numerical simulations of lattice QCD with Wilson quarks to be performed at significantly smaller quark masses than was possible before. Here we report on simulations of two-flavour QCD at se
Externí odkaz:
http://arxiv.org/abs/hep-lat/0610059
Publikováno v:
JHEP 0602 (2006) 011
We study the spectral gap of the Wilson--Dirac operator in two-flavour lattice QCD as a function of the lattice spacing $a$, the space-time volume $V$ and the current-quark mass $m$. It turns out that the median of the probability distribution of the
Externí odkaz:
http://arxiv.org/abs/hep-lat/0512021
Publikováno v:
Comput.Phys.Commun.153:31-51,2003
In lattice QCD it is possible, in principle, to determine the parameters in the effective chiral lagrangian (including weak interaction couplings) by performing numerical simulations in the $\epsilon$--regime, i.e. at quark masses where the physical
Externí odkaz:
http://arxiv.org/abs/hep-lat/0212012
Domain-wall fermions preserve chiral symmetry up to terms that decrease exponentially when the lattice size in the fifth dimension is taken to infinity. The associated rates of convergence are given by the low-lying eigenvalues of a simple local oper
Externí odkaz:
http://arxiv.org/abs/hep-lat/0007015
Publikováno v:
Nucl.Phys.B552:363-378,1999
The gauge covariant lattice Dirac operator D which has recently been proposed by Neuberger satisfies the Ginsparg-Wilson relation and thus preserves chiral symmetry. The operator also avoids a doubling of fermion species, but its locality properties
Externí odkaz:
http://arxiv.org/abs/hep-lat/9808010
Autor:
Lüscher, M.
The past few years have seen many interesting theoretical developments in lattice QCD. This talk (which is intended for non-experts) focuses on the problem of non-perturbative renormalization and the question of how precisely the continuum limit is r
Externí odkaz:
http://arxiv.org/abs/hep-ph/9711205
Publikováno v:
Nucl.Phys.Proc.Suppl. 63 (1998) 153-158
We show that the renormalization factor relating the renormalization group invariant quark masses to the bare quark masses computed in lattice QCD can be determined non-perturbatively. The calculation is based on an extension of a finite-size techniq
Externí odkaz:
http://arxiv.org/abs/hep-lat/9709125