论文标题
新颖的4D爱因斯坦 - 加斯 - 鲍尼特重力中的真空吸尘器：病理和不稳定性？
Vacua in novel 4D Einstein-Gauss-Bonnet Gravity: pathology and instability?
论文作者
论文摘要
我们通过考虑真空吸尘器的量子隧道过程，显示出新型4D Einstein-Gauss-Bonnet重力的不一致性。使用标准的半古典技术，我们分析参数空间中所有允许的情况的真空衰减率。事实证明，该理论要么遇到真空衰减率的灾难性差异，要么表现出令人困惑的真空衰减速率的复杂值，或者涉及无限的不稳定（大型真空混合）。这些表明该理论至少是该理论的真空，或者是不稳定的，或者没有明确定义的极限为$ d \ rightarrow 4 $。
We show an inconsistence of the novel 4D Einstein-Gauss-Bonnet gravity by considering a quantum tunneling process of vacua. Using standard semi-classical techniques, we analytically study the vacuum decay rate for all allowed cases in the parameter space. It turns out, without exception, that the theory either encounters a disastrous divergence of vacuum decay rate, or exhibits a confusing complex value of vacuum decay rate, or involves an infinitely instability (a large vacuum mixing). These suggest a strong possibility that the theory, at least the vacuum of the theory, is either unphysical or unstable, or has no well-defined limit as $D\rightarrow 4$.
