正则配分函数的强子谱
Hadron spectroscopy from canonical partition functions
摘要：
本文提出了一种基于化学考虑的交错费米子的光谱方法。对应于不同夸克数扇区的正则配分函数在低温极限下表示为约化费米子矩阵本征值的多项式。取零温度极限，得到最低态的质量。该方法被成功地应用到Goldstone π介子和动力学和淬火的结果显示出良好的协议与标准光谱。虽然原则上该方法可以用来获得重子和二重子的质量，但由于它们的计算成本很高，这样的计算实际上是无法实现的。
英文摘要：
A spectroscopic method for staggered fermions based on thermodynamical considerations is proposed. The canonical partition functions corresponding to the different quark number sectors are expressed in the low temperature limit as polynomials of the eigenvalues of the reduced fermion matrix. Taking the zero temperature limit yields the masses of the lowest states. The method is successfully applied to the Goldstone pion and both dynamical and quenched results are presented showing good agreement with that of standard spectroscopy. Though in principle the method can be used to obtain the baryon and dibaryon masses, due to their high computational costs such calculations are practically unreachable.
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