The metastable dark energy scenario is revisited by assuming that the current false vacuum energy density is the remnant from a primeval inflationary stage. The zero temperature scalar field potential is here described by an even power series up to order six which depends on 3 free parameters: the mass of the scalar field ($m$), the dimensionless ($\lambda$) specifying the standard self-interaction term, and a free cutoff mass scale ($M$) quantifying all possible deviations from the degenerate false vacuum state. The current $\Lambda$CDM model is a consequence of the very long decay time of the false vacuum which although finite is much greater than the current age of the Universe. This result remains valid for arbitrary combinations of the $m∕M$ ratio which can analytically be determined in the thin-wall approximation and numerically calculated outside this limit. Unlike many claims in the literature the vacuum dominance may be temporary. The finiteness of the decay time suggests that the ultimate stage of the observed Universe in such a scenario will not be driven by a de Sitter type cosmology.

通过假设当前的虚假真空能量密度是原始通货膨胀阶段的残留物，重新审视了亚稳态暗能量情景。零温度标量场电势在这里由偶数幂级数描述，阶数为6，取决于3个自由参数：标量场的质量（$米$），无量纲（$\lambda$），指定标准的自相互作用项和自由截止质量标度（$\mathrm{中号}$）量化与退化的虚假真空状态的所有可能偏差。目前$\Lambda$CDM模型是虚假真空非常长的衰减时间的结果，尽管有限，远大于宇宙的当前年龄。该结果对于以下项的任意组合仍然有效$米∕\mathrm{中号}$该比率可以通过薄壁近似值进行分析确定，并在此范围之外进行数值计算。与文献中的许多主张不同，真空优势可能是暂时的。衰变时间的有限性表明，在这种情况下观测到的宇宙的最终阶段将不会受到de Sitter型宇宙学的驱动。