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Towards the renormalization group flow of Ho?ava gravity in 3+1 dimensions

机译:朝着3 + 1维霍夫瓦引力的重整化群流

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We compute the renormalization group running of the Newton constant and the parameter λ in ( 3 + 1 )-dimensional projectable Ho?ava gravity. We use the background-field method, expanding around configurations with flat spatial metric, but nonvanishing shift. This allows us to reduce the number of interaction vertices and thereby drastically simplify the calculations. The gauge-invariant β -function of λ has two families of zeros, attractive in the infrared and ultraviolet, respectively. They are candidates for the fixed points of the full renormalization group flow of the theory, once the β -functions for the rest of the couplings are added.
机译:我们计算牛顿常数和参数λ在(3 +1)维可投影Hoava重力中的重归一化组运行。我们使用背景场​​方法,围绕具有平坦空间度量但不消失的偏移的配置进行扩展。这使我们能够减少交互顶点的数量,从而大大简化计算。 λ的尺度不变β函数具有两个零位,分别在红外线和紫外线下具有吸引力。一旦添加了其余耦合的β函数,它们将成为该理论的完全重整化群流的不动点的候选者。

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