标题： 单泡泡时空中的重整化应力张量 显示英文标题

标题： Renormalized stress tensor in one-bubble spacetimes

摘要： 我们计算了量子场与正在成核的气泡相互作用时的两点函数以及应力张量的重整化期望值。考虑了两个简单的模型。一个是无质量场，在 Vilenkin-Ipser-Sikivie 时空中，描述反射对称性域墙的引力场；另一个是平坦时空中的真空调衰变，其中量子场仅与气泡壁上的隧道场相互作用。在这两种情况下，应力张量都具有完美流体的形式。给出了每个模型的状态方程的渐近形式。在 VIS 情况下，我们发现$p=-(1/3)\rho$，其中能量密度$\rho$主要由超曲率模梯度主导。 显示英文摘要

摘要： We compute the two-point function and the renormalized expectation value of the stress tensor of a quantum field interacting with a nucleating bubble. Two simple models are considered. One is the massless field in the Vilenkin-Ipser-Sikivie spacetime describing the gravitational field of a reflection symmetric domain wall. The other is vacuum decay in flat spacetime where the quantum field only interacts with the tunneling field on the bubble wall. In both cases the stress tensor is of the perfect fluid form. The assymptotic form of the equation of state are given for each model. In the VIS case, we find that $p=-(1/3)\rho$, where the energy density $\rho$ is dominated by the gradients of supercurvature modes.