It has been 30 years since the discovery of the Unruh effect. It has played a crucial role in
our understanding that the particle content of a field theory is observer dependent. This …

We study, in the framework of open quantum systems, the geometric phase acquired by a
uniformly accelerated two-level atom undergoing nonunitary evolution due to its coupling to …

We consider a gedanken experiment with a beam of atoms in their ground state that are
accelerated through a single-mode cavity. We show that taking into account of the …

We study a two-level atom in interaction with a real massless scalar quantum field in a
spacetime with a reflecting boundary. The presence of the boundary modifies the quantum …

We investigate the transition rates of uniformly accelerated two-level single and entangled
atomic systems in empty space as well as inside a cavity. We take into account the …

We investigate, from the point of view of a coaccelerated frame, the spontaneous excitation
of a uniformly accelerated two-level atom interacting with a scalar field in a thermal state at a …

We calculate respectively, from the viewpoints of an instantaneously/locally inertial observer
and a coaccelerated observer, the transition rates of the two-atom system in the symmetric …

We study the scalar radiation emitted by a source orbiting a Schwarzschild–anti–de Sitter
black hole in circular geodesics. We obtain the emitted power using quantum field theory in …

We revisit the Fulling-Davies-Unruh effect in the context of two-level single and entangled
atomic systems that are either uniformly accelerated or static in a thermal bath. We consider …

In [JPB Brito, Phys. Rev. D 104, 124085 (2021). PRVDAQ 2470-0010 10.1103/PhysRevD.
104.124085], we studied the scalar radiation emitted by a source orbiting a Schwarzschild …