Speaker
Description
Recent studies have shown that an Unruh-DeWitt (UDW) detector coupled to a massless scalar field in (3+1) Schwarzschild and (2+1) non-rotating BTZ spacetimes exhibits a local extremum in transition rate at the horizon. This non-monotonicity is of interest, as it suggests that the event horizon is distinguishable to a local probe when QFT is taken into consideration. In this study, we calculate the transition rate of a freely falling UDW detector in (2+1)-dimensional rotating BTZ spacetime. We explore different values of black hole mass, black hole angular momentum, and boundary conditions of the field at infinity. The results that we obtain are consistent with previous studies in the limit as black hole angular momentum vanishes; however, the presence of rotation introduces new phenomena, and our results provide a more general profile for the infalling detector problem in BTZ spacetime. There is now a growing body of evidence for detector excitement across black hole event horizons, and we anticipate that further searches will be conducted in other spacetimes to better understand its physical meaning.
Keyword-1 | Unruh-DeWitt detector |
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Keyword-2 | Rotating BTZ black hole |
Keyword-3 | RQI |