53 citations · 85 across the 6 of their papers we have counts for
6 papers
Pure-state density matrix that competently describes classical chaos
A. M. Kowalski, A. Plastino, G. Gonzalez Acosta
We work with reference to a well-known semiclassical model, in which quantum degrees of freedom interact with classical ones. We show that, in the classical limit, it is possible t…
Deformed Tsallis-statistics analysis of a complex nonlinear matter-field system
A. M. Kowalski, A. Plastino
We study, using information quantifiers, the dynamics generated by a special Hamiltonian that gives a detailed account of the interaction between a classical and a quantum system.…
Nonlinear dynamics of a semiquantum Hamiltonian in the vicinity of quantum unstable regimes
A. M. Kowalski, R. Rossignoli
We examine the emergence of chaos in a non-linear model derived from a semiquantum Hamiltonian describing the coupling between a classical field and a quantum system. The latter co…
Complex modes in unstable quadratic bosonic forms
R. Rossignoli, A. M. Kowalski
We discuss the necessity of using non-standard boson operators for diagonalizing quadratic bosonic forms which are not positive definite and its convenience for describing the temp…
Stability, complex modes and non-separability in rotating quadratic potentials
R. Rossignoli, A. M. Kowalski
We examine the dynamics of a particle in a general rotating quadratic potential, not necessarily stable or isotropic, using a general complex mode formalism. The problem is equival…
Tsallis' deformation parameter q quantifies the classical-quantum transition
A. M. Kowalski, M. T. Martin, A. Plastino +1
We investigate the classical limit of a type of semiclassical evolution, the pertinent system representing the interaction between matter and a given field. On using as a quantifie…