5 papers
Quantum simulacra
L. F. Alves da Silva, M. H. Y. Moussa
Here we analyze the creation of quantum simulacra: phenomena that emerge from treating a Hermitian or non-Hermitian quantum system in metrics other than the standard . Chang…
Collective Mpemba-Type Relaxation in Degenerate Bosonic Modes Coupled to a Common Thermal Reservoir
I. M. de Araújo, H. Sanchez, L. F. Alves da Silva +2
We investigate collective Mpemba-type relaxation in a degenerate family of bosonic modes coupled to a common thermal reservoir. Starting from a fully symmetric M-mode description a…
Spontaneous symmetry breaking for nonautonomous pseudo-Hermitian systems
L. F. Alves da Silva, M. H. Y. Moussa
Here we first present an alternative formulation of the Lewis & Riesenfeld theorem for solving the Schrödinger equation with nonautonomous Hermitian and pseudo-Hermitian Hamiltoni…
Superradiance in dense atomic samples
I. M. de Araújo, H. Sanchez, L. F. Alves da Silva +1
Here we present an approach to the problem of superradiance in dense atomic samples, when dipolar interactions arise between atoms. Our treatment consists of the sequential use of…
Superradiance and Superabsorption Engine of Two-Level Systems: -Power Scaling at Near-Unity Efficiency
L. F. Alves da Silva, H. Sanchez, M. A. Ponte +2
We present a thermal engine that exploits the \emph{cooperative superradiance} and \emph{superabsorption} of a sample of \(N\) two-level atoms. This engine operates using a single…