With recent constraints on the propagation speed of gravitational waves, the class of scalar-tensor theories has significantly been reduced. We consider one of the surviving models still relevant for cosmology and investigate its radiative stability. The model contains operators with explicit breaking of the Galileon symmetry and we study whether they harm the re-organization of the effective field theory. Within the regime of validity we establish a non-renormalization theorem and show explicitly that the quantum corrections, to one-loop, do not detune the classical Lagrangian generating suppressed counterterms. This is striking since the non-renormalization theorem is established in the presence of a genuine Galileon symmetry breaking term.

中文翻译：

---

量子放大镜下的霍恩德斯基

随着最近对引力波传播速度的限制，标量张量理论的类别已显着减少。我们考虑仍然与宇宙学相关的幸存模型之一，并研究其辐射稳定性。该模型包含显式破坏伽利略对称性的算子，我们研究它们是否会损害有效场论的重组。在有效性范围内，我们建立了一个非重整化定理，并明确表明对单循环的量子校正不会使经典拉格朗日产生抑制反项失谐。这是惊人的，因为非重整化定理是在真正的伽利略对称破缺项的存在下建立的。