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Poisson Statistics in the High Temperature QCD Dirac Spectrum
Poisson Statistics the High Temperature QCD Dirac Spectrum
2011/1/6
At low temperature in the epsilon regime of QCD the low-end of the Dirac spectrum is described by random matrix theory. In contrast, there has been no similarly well established staistical description...
Poisson Statistics in the High Temperature QCD Dirac Spectrum
Poisson Statistics the High Temperature QCD Dirac Spectrum
2011/1/6
At low temperature in the epsilon regime of QCD the low-end of the Dirac spectrum is described by random matrix theory. In contrast, there has been no similarly well established staistical description...
大型FFAG磁铁的2维POISSON设计
大型FFAG磁铁 2维POISSON设计 修整线圈
2009/2/19
为减小边缘场效应，大型固定磁场交变梯度（FFAG）磁铁的磁场分布由修整线圈和磁极形状两者共同来实现。通过2维POISSON模拟计算，确定了修整线圈电流和位置的分布以及磁极形状, 得到了局域磁场梯度指数与设计值之间的最大差异只有0.5％的磁场分布。为提高POISSON模拟计算的效率，POISSON输入文件中有关线圈电流和位置、磁极形状的输入和调整由程序自动完成。
在活动标架系下给出了O(n)/O(n-1)对称空间上非线性σ模型的Poisson-Lie括号,并用协变分解的方法讨论了活动标架与固定标架系的协交关系,得到的r、s矩阵可以明显地看出其依赖于场量的部分是由于Sn－1流形上的联络引起的.
