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arXiv 0812.1427hep-lat
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SU的相结构(3)两种形式双折射表象费米子的规范理论

Phase structure of SU(3) gauge theory with two flavors of symmetric-representation fermions

Thomas DeGrand, Yigal Shamir, Benjamin Svetitsky

摘要:

我们对SU(3)规范理论与Nf=2味对称表象费米子的耦合进行了数值模拟。费米子的离散与蝌蚪改进三叶草行动。我们的模拟是在长度为L=6、8和12的格子上进行的。在所有的模拟卷中,我们观察到一个交叉,从强耦合的限制相弱耦合deconfined相。屏蔽质量的简并,加上赝标衰变常数的行为,表明退精细相也是一个恢复手征对称性的相。随着体积的变化,限制跃迁的运动与避免无质量理论的红外固定点的吸引盆是一致的。

英文摘要:

We have performed numerical simulations of SU(3) gauge theory coupled to Nf=2 flavors of symmetric representation fermions. The fermions are discretized with the tadpole-improved clover action. Our simulations are done on lattices of length L=6, 8, and 12. In all simulation volumes we observe a crossover from a strongly coupled confined phase to a weak coupling deconfined phase. Degeneracies in screening masses, plus the behavior of the pseudoscalar decay constant, indicate that the deconfined phase is also a phase in which chiral symmetry is restored. The movement of the confinement transition as the volume is changed is consistent with avoidance of the basin of attraction of an infrared fixed point of the massless theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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