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arXiv 0812.1681hep-lathep-phhep-thnucl-th
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动力学手征改进费米子的强子谱

Hadron Spectroscopy with Dynamical Chirally Improved Fermions

Christof Gattringer, Christian Hagen, C. B. Lang, Markus Limmer, Daniel Mohler, Andreas Schäfer

摘要:

我们用Chirally Improved Dirac算符模拟了16^3x32格点上两个动态的质量简并轻夸克,空间范围为2.4 fm。详细讨论了平衡的仿真方法、平衡动作和信号的实现。基于狄拉克算子的本征值,我们讨论了我们的方法的一些定性特征。给出了赝标和矢量介子以及核子和δ重子的基态质量的计算结果。

英文摘要:

We simulate two dynamical, mass degenerate light quarks on 16^3x32 lattices with a spatial extent of 2.4 fm using the Chirally Improved Dirac operator. The simulation method, the implementation of the action and signals of equilibration are discussed in detail. Based on the eigenvalues of the Dirac operator we discuss some qualitative features of our approach. Results for ground state masses of pseudoscalar and vector mesons as well as for the nucleon and delta baryons are presented.

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