Tuning the strange quark mass in lattice simulations
Tuning the strange quark mass in lattice simulations
复制标题
在晶格模拟中调整奇异夸克质量
DOI:
10.1016/j.physletb.2010.05.067
复制
发表时间:
2010
影响因子:
4.4
通讯作者:
Bietenholz W
中科院分区:
文献类型:
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作者:
Bietenholz W
QCD lattice simulations with 2+1 flavours typically start at rather large up-down and strange quark masses and extrapolate first the strange quark mass to its physical value and then the up-down quark mass. An alternative method of tuning the quark masses is discussed here in which the singlet quark mass is kept fixed, which ensures that the kaon always has mass less than the physical kaon mass. It can also take into account the different renormalisations (for singlet and non-singlet quark masses) occurring for non-chirally invariant lattice fermions and so allows a smooth extrapolation to the physical quark masses. This procedure enables a wide range of quark masses to be probed, including the case with a heavy up-down quark mass and light strange quark mass. Results show the correct order for the baryon octet and decuplet spectrum and an extrapolation to the physical pion mass gives mass values to within a few percent of their experimental values.
DOI:
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发表时间:
2004
期刊:
影响因子:
--
作者:
P. Rakow
通讯作者:
P. Rakow
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
M. Göckeler;R. Horsley;A. Irving;D. Pleiter;P. Rakow;G. Schierholz;H. Stüben
通讯作者:
H. Stüben
DOI:
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发表时间:
2008
期刊:
影响因子:
--
作者:
R. Horsley;H. Perlt;P. Rakow;G. Schierholz;A. Schiller
通讯作者:
A. Schiller