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Radiative corrections in the Yukawa model within the null-plane causal perturbation theory framework

机译:零飞机因果扰动理论框架中兖川模型的辐射矫正

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Practical calculations in light-front dynamics are, as a general rule, complicated, since there is no consensus about how to treat the poles which come from the instantaneous parts of Feynman’s propagators of the fields. An alternative to solve this difficulty is null-plane causal perturbation theory, a recent developed framework which prevents the appearance of the mentioned poles by avoiding the usage of Feynman’s propagators in “loop distributions,” requiring no regularization of the amplitudes. In this study, we treat the radiative corrections in the neutral Yukawa’s model in that framework. Particularly, we explicitly calculate the boson and fermion self-energies and show that the results obtained with this approach are equivalent to that of the instant dynamics.
机译:光前动态的实际计算是一般规则,复杂,因为没有关于如何处理来自Feyynman的田地的瞬时部分的杆子。 解决这个困难的替代方案是零平面因果扰动理论,最近的发达框架,这是通过避免FEYNMAN的传播者在“循环分布”中的使用不需要幅度的正则化来防止所提到的极点的外观。 在这项研究中,我们在该框架中对中立yukawa模型进行辐射校正。 特别是,我们明确地计算了玻色子和费米偏见的自我能量,并表明用这种方法获得的结果相当于即时动态的结果。

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