标题： 静态时空中的福克空间态归一化 显示英文标题

标题： Normalizing Fock space states in static spacetimes

摘要： 在量子场论中，尖锐动量态必须被归一化以位于福克空间中。 我们研究了不同的归一化方案，包括盒子归一化和波包。 这些方法在平直时空下是等价的，但在弯曲时空中却会产生不同的结果，特别是在破坏平移不变性的时空中。 这意味着散射过程必须相对于所使用的归一化方案来定义，而不是像平直时空那样独立于归一化方案。 我们提供了这一现象的示例。 显示英文摘要

摘要： In quantum field theory, sharp momentum states have to be normalized to be in Fock space. We investigate different normalization schemes, both box normalization and wave packets. These methods are equivalent in flat spacetimes, but turn out to produce different results in curved spacetimes, specifically in those that break translation invariance. This means that scattering processes have to be defined in relation to the normalization scheme used, rather than being independent of it as is the case in flat spacetime. We provide an illustrative example of this phenomenon.