52 citations · 124 across the 12 of their papers we have counts for
12 papers
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, G. B. Lemos +3
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…
Doorway states and the Bose-Hubbard model
A. N. Salgueiro, Chi-Yong Lin, A. F. R. de Toledo Piza +1
We introduce an efficient method to solve the Mott-Hubbard model. The Schrödinger equation is solved by the successive construction of doorway states. The ground state wavefunction…
Entanglement of a Multiparticle Schroedinger Cat State
A. N. Salgueiro
We characterize the degree of entanglement of a subsystem of particles in a -two level system () initially prepared in a mesoscopic superposition $|ψ>=\int dθf(θ)…
Number-conserving rate equation for sympathetic cooling of a boson gas
A. N. Salgueiro
We derive a particle number-conserving rate equation for the ground state and for the elementary excitations of a bosonic system which is in contact with a gas of a different speci…
Density Matrix of a Bose--Einstein Condensate: Steady--State versus Mean--Field Approach
S. J. Wang, M. C. Nemes, A. N. Salgueiro +1
We compare the equilibrium solution for the condensate obtained in the mean--field approximation to the master equation for sympathetic cooling with the one obtained by Scully for…
Mean-Field Approximation to the Master Equation for Sympathetic Cooling of Trapped Bosons
S. J. Wang, M. C. Nemes, A. N. Salgueiro +1
We use the mean-field approximation to simplify the master equation for sympathetic cooling of Bosons. For the mean single-particle occupation numbers, this approach yields the sam…