Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Necco S"'
Autor:
Necco, S., Shindler, A.
Publikováno v:
PoS (CD12) 056 (2012)
The Banks-Casher relation links the spectral density of the Dirac operator with the existence of a chiral condensate and spontaneous breaking of chiral symmetry. This relation receives corrections from a finite value of the quark mass, a finite space
Externí odkaz:
http://arxiv.org/abs/1302.5595
Autor:
Necco, S., Shindler, A.
We summarize our recent determination [1] of the spectral density of the Wilson operator in the p-regime of Wilson chiral perturbation theory. We discuss the range of validity of our formula and a possible extension to our computation in order to bet
Externí odkaz:
http://arxiv.org/abs/1108.1950
Autor:
Necco, S., Shindler, A.
We compute the lattice spacing corrections to the spectral density of the Hermitean Wilson Dirac operator using Wilson Chiral Perturbation Theory at NLO. We consider a regime where the quark mass $m$ and the lattice spacing $a$ obey the relative powe
Externí odkaz:
http://arxiv.org/abs/1101.1778
Publikováno v:
JHEP 1004:053,2010
We investigate the leading lattice spacing effects in mesonic two-point correlators computed with twisted mass Wilson fermions in the epsilon-regime. By generalizing the procedure already introduced for the untwisted Wilson chiral effective theory, w
Externí odkaz:
http://arxiv.org/abs/1002.1582
Publikováno v:
PoS LAT2009:071,2009
We report on our first experiences in simulating Neuberger valence fermions on CLS $N_f=2$ configurations with light sea quark masses and small lattice spacings. Valence quark masses are considered that allow to explore the matching to (partially que
Externí odkaz:
http://arxiv.org/abs/0911.3756
Publikováno v:
JHEP 0805:024,2008
We investigate two-point correlation functions of left-handed currents computed in quenched lattice QCD with the Neuberger-Dirac operator. We consider two lattice spacings a~0.09,0.12 fm and two different lattice extents L~ 1.5, 2.0 fm; quark masses
Externí odkaz:
http://arxiv.org/abs/0803.2772
Publikováno v:
JHEP 0603 (2006) 017
We explore gauge actions for lattice QCD, which are constructed such that the occurrence of small plaquette values is strongly suppressed. By choosing strong bare gauge couplings we arrive at values for the physical lattice spacings of O(0.1 fm). Suc
Externí odkaz:
http://arxiv.org/abs/hep-lat/0511016
Publikováno v:
PoS LAT2005 (2005) 283
We explore gauge actions for lattice QCD, which are constructed such that the occurrence of small plaquette values is strongly suppressed. Such actions originate from the admissibility condition in order to conserve the topological charge. The suppre
Externí odkaz:
http://arxiv.org/abs/hep-lat/0509170
Autor:
XLF Collaboration, Bietenholz, W., Jansen, K., Nagai, K. -I., Necco, S., Scorzato, L., Shcheredin, S.
Publikováno v:
AIPConf.Proc.756:248-250,2005
We test a set of lattice gauge actions for QCD that suppress small plaquette values and in this way also suppress transitions between topological sectors. This is well suited for simulations in the epsilon-regime and it is expected to help in numeric
Externí odkaz:
http://arxiv.org/abs/hep-lat/0412017
We study lattice QCD with a gauge action, which suppresses small plaquette values. Thus the MC history is confined to a single topological sector over a significant time, while other observables are decorrelated. This enables the cumulation of statis
Externí odkaz:
http://arxiv.org/abs/hep-lat/0409073