I am currently working on black hole stability. I am also interested in the peeling behaviour of asymptotically flat spacetimes.
Previously, I worked on a relativistic quantum analogue of the classical Otto engine using a single qubit interacting with a massless scalar field while undergoing ultra-relativistic half-circular rotations. The Unruh effect generated by the qubit’s acceleration acts as an effective thermal bath. We show that the qubit’s response function is strongly influenced by its circular trajectory, and that the transition probability saturates to a correlation-function–dependent constant in the high-acceleration regime. The work output increases with acceleration and approaches an asymptotic limit, while the efficiency remains unchanged by the circular motion and agrees with earlier models.