306 research outputs found
B_K from Two-flavor Dynamical Domain Wall Fermions
We report preliminary results from an ongoing calculation of for
dynamical QCD with domain wall fermions. Simulations have been done
with three dynamical quark masses on volumes with ,
where the lattice spacing is GeV. Using measurements on
lattices for each dynamical mass and extrapolating \mdyn=\mval to
the kaon point, we find .Comment: Lattice2003(matrix), 3 pages, 2 figure
Lattice Gross-Neveu model with domain-wall fermions
We investigate the two-dimensional lattice Gross-Neveu model, using the
domain-wall fermion formulation, as a toy model of lattice QCD. We study
features of the phase diagram related to the mechanism of chiral symmetry
restoration, and find that the parity-broken phase (Aoki phase) exists for
finite extent in the extra dimension (). We also find that O(a) scaling
violation terms vanishes in the limit of .Comment: LATTICE99 (Chiral Fermions), 3 pages, 4 figure
Static - Potential from Dynamical Domain-Wall QCD
We calculate the static quark and anti-quark potential both in quenched and
two-flavor dynamical quark lattice QCD using DBW2 gauge and domain-wall quark
actions. Lattice spacings from Sommer scale are determined. We find (i) mixing
of excited states is different in between quenched and dynamical, (ii) lattice
spacing in dynamical and (iii) coefficient of
Coulomb term being at 2 GeV.Comment: Talk presented at Lattice2004(spectrum), Fermilab, June 21-26, 200
Improving chiral property of domain-wall fermions by reweighting method
The reweighting method is applied to improve the chiral property of
domain-wall fermions. One way to achieve this is to enlarge , the size of
fifth dimension, which controls the size of the induced chiral symmetry
breaking. While this is a type of reweighting method for shifting the action
parameter, it seems non-trivial since this reweighting means change of the five
dimensional lattice volume. In this report, we address issues in this direction
of reweighting and evaluate its effectiveness.Comment: 7 pages, talk presented at The XXVII International Symposium on
Lattice Field Theory, July 26-31 2009, Peking University, Beijing, Chin
- …