Master equations are commonly employed in cosmology to model the effect of additional
degrees of freedom, treated as an “environment”, onto a given “system”. However, they rely …

The Unruh effect states that a uniformly linearly accelerated observer with proper
acceleration a experiences Minkowski vacuum as a thermal state in the temperature T lin …

We revisit the problem involving two constantly accelerating Unruh-DeWitt detectors using
open effective field theory methods. We study the time evolution of the joint detector state …

We study Unruh phenomena for a qudit detector coupled to a quantized scalar field,
comparing its response to that of a standard qubit-based Unruh-DeWitt detector. We show …

A bstract We compute how an accelerating qubit coupled to a scalar field—ie an Unruh-
DeWitt detector—evolves in flat space, with an emphasis on its late-time behaviour. When …

We revisit the problem of the thermalization process in an entropic formulation for the Unruh-
DeWitt (UDW) detector outside a Schwarzschild black hole. We derive the late-time …

A bstract We examine the late-time evolution of a qubit (or Unruh-De Witt detector) that
hovers very near to the event horizon of a Schwarzschild black hole, while interacting with a …

We treat an Unruh-DeWitt detector as an open quantum system and evaluate the response
of a uniformly accelerated detector:(i) interacting locally with the derivatives of a massless …

We study the exact Markovian and non-Markovian dynamics of entanglement, excited-state
population, and quantum memory-assisted entropic uncertainty of two dipole-dipole …

A bstract Temporal evolution of a comoving qubit coupled to a scalar field in de Sitter space
is studied with an emphasis on reliable extraction of late-time behaviour. The phenomenon …