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arXiv 0810.1570hep-lat
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SU的热力学(3)固定格点间距下的规范理论

Thermodynamics of SU(3) gauge theory at fixed lattice spacing

T. Umeda, S. Ejiri, S. Aoki, T. Hatsuda, K. Kanaya, Y. Maezawa, H. Ohno

摘要:

我们研究了SU(3)规范理论在固定格点尺度下的热力学,通过改变格点的时间尺度N_t=(Ta_t)^{-1}来改变温度.在固定尺度方法中,有限温度模拟是在常见的晶格间距和空间体积上进行的。因此,我们可以从其他不确定性,如晶格伪影,重整化因子和空间体积效应中分离出热效应。此外,在EOS计算中,固定标度方法能够减少零温度减法和参数搜索的计算成本,以找到恒定的物理线,这是在完整的QCD模拟要求。作为对这种方法的检验,我们研究了SU(3)规范理论在各向同性和各向异性晶格上的热力学性质。除了物态方程外,我们还计算了定标度下的临界温度和静态夸克自由能。

英文摘要:

We study thermodynamics of SU(3) gauge theory at fixed scales on the lattice, where we vary temperature by changing the temporal lattice size N_t=(Ta_t)^{-1}. In the fixed scale approach, finite temperature simulations are performed on common lattice spacings and spatial volumes. Consequently, we can isolate thermal effects in observables from other uncertainties, such as lattice artifact, renormalization factor, and spatial volume effect. Furthermore, in the EOS calculations, the fixed scale approach is able to reduce computational costs for zero temperature subtraction and parameter search to find lines of constant physics, which are demanding in full QCD simulations. As a test of the approach, we study the thermodynamics of the SU(3) gauge theory on isotropic and anisotropic lattices. In addition to the equation of state, we calculate the critical temperature and the static quark free energy at a fixed scale.

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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