论文标题
（接近）永恒的假真空吸尘器的寿命
Lifetimes of (near) eternal false vacua
论文作者
论文摘要
我们考虑了量子场理论中长期寿命的假真空的例子，这些量子是由所谓的“宇宙”引起的。这些虚假的真空受到$（d-1）$ - 形式全球对称性的保护，其中$ d $是时空的尺寸。假真空吸尘器的使用寿命是由紫外线数据设置的：$（d-2）$ - 以$（d-2）$ - 表格对称为对称的branes的张力。即使与田间理论的自然尺度相比，即使假性真空吸尘器之间的能量密度差异很大，也可以在参数上长时间。我们研究了在二维和四维QCD中，在阿贝尔仪理论中近乎遗传的真空吸尘器的示例。在这两种情况下，都可以将$（d-1）$ - 表单对称性视为istantons的总和的修改而产生的。我们发现，4D QCD中插入总和的修改导致涉及3形和常规0形式全局对称性的高层对称结构。
We consider examples of long-lived false vacua in quantum field theory that arise from so-called `universes'. These false vacua are protected by a $(d-1)$-form global symmetry, where $d$ is the dimension of spacetime. The lifetimes of the false vacua are set by UV data: the tension of $(d-2)$-branes charged under a $(d-2)$-form gauge symmetry. The lifetimes can be made parametrically long even when the difference in energy density between the false and true vacua is large compared to the natural scales of the field theory. We study examples of near-eternal false vacua in abelian gauge theories in two dimensions and in four-dimensional QCD. In both cases, it is possible to view the $(d-1)$-form symmetries as arising from a modification of the sum over instantons. We find that the modification of the instanton sum in 4d QCD leads to a higher-group symmetry structure involving the 3-form and conventional 0-form global symmetries.
