Tunneling transitions with gravitation: Breakdown of the quasiclassical approximation
Tunneling transitions with gravitation: Breakdown of the quasiclassical approximation
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引力隧道跃迁：准经典近似的分解
DOI：
10.1016/0370-2693(85)90761-0
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发表时间：
1985
影响因子：
4.4
通讯作者：
P. Tinyakov
中科院分区：
文献类型：
--
作者：
G. Lavrelashvili;V. Rubakov;P. Tinyakov
我们讨论了描述亚稳态真空中新相气泡物化的隧穿过程的O(4)不变反弹附近的微扰。我们发现，对于一定范围的参数，引力效应会导致大量负模的存在。我们认为这意味着准经典近似的崩溃，并推测了准经典隧穿的一种可能的替代方案。我们指出，即使在具有稳定的经典欧几里德构型的模型中，非准经典隧穿的可能性也使得隧穿的准经典描述受到质疑。
We discuss the perturbations around the O(4)-invariant bounce describing the tunneling process leading to the materialization of a bubble of a new phase in metastable vacuum. We find that for some range of parameters, the gravitational effects lead to the existence of a huge number of negative modes. We argue that this implies the breakdown of the quasiclassical approximation and speculate on a possible alternative to the quasiclassical tunneling. We point out that the possibility of non-quasiclassical tunneling makes the quasiclassical description of tunneling questionable even in models with stable classical euclidean configurations.