Ghost spectral function from the spectral Dyson-Schwinger equation,Physical Review D

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Ghost spectral function from the spectral Dyson-Schwinger equation
Physical Review D ( IF 4.6 ) Pub Date : 2021-10-21 , DOI: 10.1103/physrevd.104.074017
Jan Horak ₁ , Joannis Papavassiliou ₂ , Jan M. Pawlowski _{1,

3} , Nicolas Wink ₁

Affiliation

We compute the ghost spectral function in Yang-Mills theory by solving the corresponding Dyson-Schwinger equation for a given input gluon spectral function. The results encompass both scaling and decoupling solutions for the gluon propagator input. The resulting ghost spectral function displays a particle peak at vanishing momentum and a negative scattering spectrum, whose infrared and ultraviolet tails are obtained analytically. The ghost dressing function is computed in the entire complex plane, and its salient features are identified and discussed.

中文翻译：

来自光谱 Dyson-Schwinger 方程的鬼光谱函数

我们通过求解给定输入胶子谱函数的相应 Dyson-Schwinger 方程来计算 Yang-Mills 理论中的鬼谱函数。结果包括胶子传播子输入的缩放和解耦解决方案。由此产生的鬼光谱函数在消失动量处显示一个粒子峰和一个负散射光谱，其红外和紫外尾部是通过分析获得的。在整个复平面上计算鬼修整函数，并识别和讨论其显着特征。

更新日期：2021-10-22

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