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gr-qc2021
A Little Excitement Across the Horizon
Keith K. Ng, Chen Zhang, Jorma Louko +1
We analyse numerically the transitions in an Unruh-DeWitt detector, coupled linearly to a massless scalar field, in radial infall in (3+1)-dimensional Schwarzschild spacetime. In t…
gr-qc2020
Unruh-DeWitt Detector Differentiation of Black Holes and Exotic Compact Objects
Bob Holdom, Robert B. Mann, Chen Zhang
We study the response of a static Unruh-DeWitt detector outside an exotic compact object (ECO) with a general reflective boundary condition in 3+1 dimensions. The horizonless ECO,…