We investigate the Unruh-Fulling effect in a class of nonlocal field theories by examining both number operator and Unruh-DeWitt detector methods. Unlike previous literature, we use Unruh quantization to quantize matter field. Such choice, as oppose standard Minkowski decomposition, naturally incorporates time translational invariance positive frequency Wightman function thus captures thermal e...

We show under what conditions an accelerated detector (e.g., atom/ion/molecule) thermalizes while interacting with the vacuum state of a quantum field in setup where detector's acceleration alternates sign across multiple optical cavities. (non-perturbatively) regimes probe `forgets' that it is traversing cavities and to temperature proportional its acceleration. Then we analyze detail how this...

Originally, the Unruh effect is considered in the Minkowski spacetime. That is, for a uniformly accelerated observer in the Minkowski spacetime, there will be an event horizon, and the observer will detect radiation from it. In this paper, we extend the Unruh effect to the Kruskal spacetime. After defining some special null hypersurface in the Kruskal spacetime, we find that it can be considere...

We calculate the radiation resulting from the Unruh effect for strongly accelerated electrons and show that the photons are created in pairs whose polarizations are maximally entangled. Apart from the photon statistics, this quantum radiation can further be discriminated from the classical (Larmor) radiation via the different spectral and angular distributions. The signatures of the Unruh effec...