Symmetry restoration, tunneling, and the null energy condition
Symmetry restoration, tunneling, and the null energy condition
复制标题
对称性恢复、隧道效应和零能量条件
作者：
J. Alexandre;J. Polonyi
在量子场论中，finite体积允许在简并真空之间隧穿，并由于配分函数中不同鞍点的竞争而产生显著的能量特征。我们描述了平衡时fiNite温度的这种竞争，同时考虑了静态和(欧几里得)时间相关的鞍点。均匀序参数的ff理论在低温下产生了非扩展真空能量，这意味着动力学上违反了零能条件。
A finite volume allows tunnelling between degenerate vacua in Quantum Field Theory, and leads to remarkable energetic features, arising from the competition of different saddle points in the partition function. We describe this competition for finite temperature at equilibrium, taking into account both static and (Euclidean) time-dependent saddle points. The effective theory for the homogeneous order parameter yields a non-extensive vacuum energy at low temperatures, implying a dynamical violation of the Null Energy Condition.