标题： 无规范依赖的冻结QED中的手征对称性破缺 显示英文标题

标题： Gauge independent Chiral Symmetry Breaking in Quenched QED

摘要： 在淬火QED中，我们构建了一个非微扰的费米子-玻色子顶点，该顶点确保费米子传播子满足Ward-Takahashi恒等式，是乘法可重整化的，在弱耦合情况下与微扰理论一致，并且具有严格与规范无关的动力学质量生成临界耦合。 这与雨衣近似形成鲜明对比，在雨衣近似中，临界耦合在朗道规范和费曼规范之间变化了50%。 使用这样的顶点应该会导致对质量生成更可信的研究。 显示英文摘要

摘要： In quenched QED we construct a non-perturbative fermion-boson vertex that ensures the fermion propagator satisfies the Ward-Takahashi identity, is multiplicatively renormalizable, agrees with perturbation theory for weak couplings and has a critical coupling for dynamical mass generation that is strictly gauge independent. This is in marked contrast to the rainbow approximation in which the critical coupling changes by 50% just between the Landau and Feynman gauges. The use of such a vertex should lead to a more believable study of mass generation.