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Thermal extension of the screened massive expansion in the Landau gauge

机译：Landau测量仪筛选的膨胀膨胀的热延伸

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The massive screened expansion for pure SU(3) Yang-Mills theory is extended to finite temperature in the Landau gauge. All thermal integrals are evaluated analytically up to an external one-dimensional integration, yielding explicit integral representations of analytic functions that can be continued to the whole complex plane. The gluon propagator is first explored in the Euclidean space by making use of parameters obtained from first principles, which were already found to accurately reproduce the lattice data at zero temperature. Within such a scheme, the agreement with the lattice at T ≠ 0 turns out to be only qualitative. The description improves provided that the parameters are tuned in a temperature-dependent way by a fit to the data, carried out separately for each component of the propagator; in particular, the transverse component closely follows the lattice data, while the agreement of the longitudinal component with the data is poor at small momenta and moderately high temperatures. The dispersion relations of the quasi-gluon are then extracted from the pole trajectory in the complex plane using the fitted parameters. A?crossover is found for the mass, suppressed by temperature like an order parameter in the confined phase, while increasing like an ordinary thermal mass in the deconfined phase.
机译：纯SU（3）洋钢厂理论的大规模筛网膨胀扩展至LANDAU规格的有限温度。所有热积分都被分析到外部一维集成，产生了可以继续到整个复杂平面的分析功能的显式积分表示。首先通过利用从第一原理获得的参数来探索胶合画宣传器，已经发现已经发现在零温度下精确地再现晶格数据。在这样的方案中，与T'0的格子的协议失败是唯一的定性。说明书，条件是，参数以温度相关的方式调谐到拟合到数据，分别为传播者的每个组件进行;特别地，横向组件紧密遵循晶格数据，而纵向组分与数据的协议在小型动量和中度高温下差。然后使用拟合参数从复合平面中的极轨道中提取准胶合的分散关系。发现了块的交叉，在狭窄相位中的顺序参数等温度抑制，同时在折叠相中的普通热质量增加。

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