论文标题
宇宙学空间中的unuh-dewitt探测器
Unruh-DeWitt detectors in cosmological spacetimes
论文作者
论文摘要
我们在宇宙学的空间中传播unuh-dewitt探测器的响应和热行为，并特别提及了如何在动态空间中定义表面重力和温度的问题。在弯曲时空近似的量子场理论中，我们考虑了一个检测器，因为它沿着地理位置和加速的Kodama轨迹在DE STINTER和渐近的Sitter de Sitter flrw flrw spaceTime中行驶。通过使用kubo-martin--schwinger（KMS）条件的详细体重平衡对检测器的温度进行建模，我们可以更好地理解检测器与量子场相互作用时的热行为，并利用它来比较文献中持续存在的表面性和温度的竞争性定义。其中包括Hayward-Kodama，Ashtekar等人，Fodor等人和Nielsen-Visser的方法。尽管这些通常在动态黑洞的背景下进行检查，但在这里我们将重点转移到了不断发展的宇宙学上的表面重力。
We analyse the response and thermal behaviour of an Unruh-DeWitt detector as it travels through cosmological spacetimes, with special reference to the question of how to define surface gravity and temperature in dynamical spacetimes. Working within the quantum field theory on curved spacetime approximation, we consider a detector as it travels along geodesic and accelerated Kodama trajectories in de Sitter and asymptotically de Sitter FLRW spacetimes. By modelling the temperature of the detector using the detailed-balance form of the Kubo--Martin--Schwinger (KMS) conditions as it thermalises, we can better understand the thermal behaviour of the detector as it interacts with the quantum field, and use this to compare competing definitions of surface gravity and temperature that persist in the literature. These include the approaches of Hayward-Kodama, Ashtekar et al., Fodor et al., and Nielsen-Visser. While these are most often examined within the context of a dynamical black hole, here we shift focus to surface gravity on the evolving cosmological horizon.
