Fate of the false monopoles: Induced vacuum decay
Fate of the false monopoles: Induced vacuum decay
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假磁单极子的命运：诱导真空衰变
DOI：
10.1103/physrevd.82.025022
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发表时间：
2010
影响因子：
5
通讯作者：
U. Yajnik
中科院分区：
文献类型：
--
作者：
B. Kumar;M. Paranjape;U. Yajnik
我们研究了一个规范理论模型，其中存在一个中间对称破缺到一个亚稳真空，使一个简单规范群破缺到一个U（1）因子。这样的模型承认亚稳态磁单极子的存在，我们称之为假单极子。在薄壁近似下证明了这些单极子的存在性。我们确定的集体坐标，对应于半径的磁墙的瞬子，我们计算的半经典隧穿率为这些单极子的衰变。因此，负真空的衰变触发了假真空的衰变。随着S质量的增加，我们发现相对于著名的均匀隧穿率，假真空的衰减率增加。R.科尔曼[亚核系列13，297（1977）。]
We study a gauge theory model where there is an intermediate symmetry breaking to a metastable vacuum that breaks a simple gauge group to a U(1) factor. Such a model admits the existence of metastable magnetic monopoles, which we dub false monopoles. We prove the existence of these monopoles in the thin-wall approximation. We determine the instantons for the collective coordinate that corresponds to the radius of the monopole wall and we calculate the semiclassical tunneling rate for the decay of these monopoles. The monopole decay consequently triggers the decay of the false vacuum. As the monopole mass is increased, we find an enhanced rate of decay of the false vacuum relative to the celebrated homogeneous tunneling rate due to S. R. Coleman [Subnuclear series 13, 297 (1977).].