6 papers
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…
Rate Equations for Sympathetic Cooling of Trapped Bosons or Fermions
T. Papenbrock, A. N. Salgueiro, H. A. Weidenmueller
We derive two different sets of rate equations for sympathetic cooling of harmonically trapped Bosons or Fermions. The rate equations are obtained from a master equation derived ea…
Sympathetic cooling and growth of a Bose-Einstein condensate
T. Papenbrock, A. N. Salgueiro, H. A. Weidenmueller
We study two sets of rate equations for sympathetic cooling of harmonically trapped Bose gases. Calculations for mixtures of Na-Rb and Li-Cs show that both sets yield similar resul…
Quasi-classical dynamics of interacting Bose condensates
A. N. Salgueiro, M. C. Nemes, M. D. Sampaio +1
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. This c…