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arXiv 0710.0481hep-lat
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限制:$G_2$组病例

Confinement: $G_2$ group case

Guido Cossu, Massimo D'Elia, Adriano Di Giacomo, Biagio Lucini, Claudio Pica

摘要:

$G_2$规范群是无心的,它是研究杨-米尔斯规范理论中群心对色禁闭作用的一个很好的实验室。本文研究了有限温度下格点上的$G_2$纯规范理论。通过研究元格的有限尺寸标度、Polyakov环和它们的非线性,我们证明了一个退禁闭相变的发生。伪临界指数的分析给出了强有力的证据的解除禁闭的转变是一阶的。我们的研究结果的颜色限制的情况下的影响进行了讨论。

英文摘要:

The gauge group being centreless, $G_2$ gauge theory is a good laboratory for studying the role of the centre of the group for colour confinement in Yang-Mills gauge theories. In this paper, we investigate $G_2$ pure gauge theory at finite temperature on the lattice. By studying the finite size scaling of the plaquette, the Polyakov loop and their susceptibilities, we show that a deconfinement phase transition takes place. The analysis of the pseudocritical exponents give strong evidence of the deconfinement transition being first order. Implications of our findings for scenarios of colour confinement are discussed.

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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