A
A. N. Salgueiro
Researcher at University of São Paulo
Publications - 10
Citations - 106
A. N. Salgueiro is an academic researcher from University of São Paulo. The author has contributed to research in topics: Master equation & Quantum tunnelling. The author has an hindex of 5, co-authored 9 publications receiving 101 citations.
Papers
More filters
Journal ArticleDOI
Quantum dynamics of bosons in a double-well potential: Josephson oscillations, self-trapping and ultralong tunneling times
A. N. Salgueiro,A. F. R. de Toledo Piza,A. F. R. de Toledo Piza,Gabriela Barreto Lemos,Raphael C. Drumond,M. C. Nemes,Matthias Weidemüller +6 more
TL;DR: In this article, the dynamics of the population imbalance of bosons in a double-well potential is investigated from the point of view of many-body quantum mechanics in the framework of the two-mode model.
Journal ArticleDOI
Quantum dynamics of bosons in a double-well potential: Josephson oscillations, self-trapping and ultralong tunneling times
A. N. Salgueiro,A. F. R. de Toledo Piza,Gabriela Barreto Lemos,Raphael C. Drumond,M. C. Nemes,M. Weidemueller +5 more
TL;DR: In this article, the dynamics of the population imbalance of bosons in a double-well potential is investigated from the point of view of many-body quantum mechanics in the framework of the two-mode model.
Journal ArticleDOI
Decoherence of mesoscopic states of cavity fields
K. M. Fonseca Romero,M. C. Nemes,J. G. Peixoto de Faria,A. N. Salgueiro,A. F. R. de Toledo Piza +4 more
TL;DR: In this paper, two-atom correlation measurements of the type involved in a recent experimental study of the evolution of a mesoscopic superposition state prepared in a definite mode of a high-Q cavity can be used to determine the eigenvalues of the reduced density matrix of the field, provided the assumed dynamical conditions are actually fulfilled to experimental accuracy.
Journal ArticleDOI
On the Physical Content of Lindblad Form Master Equations
R C de Berrêdo,J G P de Faria,F. Camargo,M.C. Nemes,Henrique E. Borges,K. M. Fonseca Romero,A. F. R. de Toledo Piza,A. N. Salgueiro +7 more
TL;DR: In this article, a solution of a quantum markovian equation of Lindblad form is reported, which yields unphysical results, which can be traced back to the assumptions made for the derivation of the equation which are valid only for a special class of interaction hamiltonians.
Journal ArticleDOI
Quasi-spins and the dynamics of interacting Bose condensates
TL;DR: In this article, the dynamics of the composition of uniform Bose condensates involving two species capable of reciprocal interconversion is treated in terms of a collective quasi-spin model.