Conveners
(DTP/DQI) T3-2 Holography and Complexity | Holographie et complexité (DPT/DIQ)
- Olivia Di Matteo (The University of British Columbia)
We study Unruh phenomena for an accelerating qudit detector coupled to a quantized scalar field, comparing its response to that of a standard qubit-based Unruh-DeWitt detector. We show that there are limitations to the utility of the detailed balance condition as an indicator for Unruh thermality of higher-dimensional qudit detector models. This can be traced to the fact that a qudit has...
In the 1970s, it was discovered that a uniformly accelerated detector, interacting with the vacuum state of a quantum scalar field in flat spacetime, has a thermal response with a temperature proportional to its proper acceleration. This phenomenon, known as the Unruh effect, is considered a signpost in the search for a quantum theory of gravity. Since the discovery of the effect, efforts have...
We consider the transition rate of a static Unruh-DeWitt particle detector in a variety of spacetimes built out of quotients of $\text{AdS}_3$ spacetime. In particular, we contrast the behavior of a Unruh-DeWitt detector interacting with a quantum scalar field in the $\mathbb{R}\text{P}^{2}$ geon spacetime and a spacetime constructed by Aminneborg et al. The Wightman functions of these...
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...
In appropriate semiclassical limits, the so-called Island Formula computes the entropy of non-gravitational quantum systems entangled with a gravitational theory. This is a special case in which the quantum-corrected Ryu-Takayanagi formula has been shown to compute a von Neumann entropy using only properties of the gravitational path integral and, in particular, without relying on the...
