Abstract We consider an extension of Higgs inflation in which the Higgs field is non-minimally coupled to gravity through its kinetic term. We analyzed power-law coupling functions with positive or negative integer power and found that the Higgs boson can drive a successful inflation only for the cases n = 2 , 1 , 0 , − 1 . Theoretical predictions for both tensor to scalar ratio r and scalar spectral index ns are within the 2018 Planck 95% CL. The behavior of the self coupling λ with respect to the scalar field at the horizon crossing was obtained, and it was found that it can take values in the interval λ ∼ ( 10 − 7 , 0.3 ) .

中文翻译：

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与重力非最小导数耦合的希格斯膨胀

摘要 我们考虑希格斯暴胀的扩展，其中希格斯场通过其动力学项与重力非最小耦合。我们分析了具有正整数幂或负整数幂的幂律耦合函数，发现希格斯玻色子只能在 n = 2 , 1 , 0 , − 1 的情况下驱动成功的膨胀。张量与标量比 r 和标量光谱指数 ns 的理论预测均在 2018 年普朗克 95% CL 内。获得了自耦合 λ 相对于水平交叉处的标量场的行为，发现它可以取区间 λ ∼ ( 10 − 7, 0.3 ) 中的值。