40 citations · 143 across the 12 of their papers we have counts for
5 papers · 1 filter
Effective coupling between two Brownian particles
O. S. Duarte, A. O. Caldeira
We use the system-plus-reservoir approach to study the dynamics of a system composed of two independent Brownian particles. We present an extension of the well-known model of a bat…
Coherence and Entanglement in a Stern-Gerlach experiment
Thiago R. de Oliveira, A. O. Caldeira
We give a simple example of the tight connection between entanglement and coherence for pure bipartite systems showing the double role played by entanglement; it allows for the cre…
Optical conductivity of charge carriers interacting with a two-level systems reservoir
A. Villares Ferrer, A. O. Caldeira, C. Morais Smith
Using the functional-integral method we investigate the effective dynamics of a charged particle coupled to a set of two-level systems as a function of temperature and external ele…
Forward Scattering Approximation and Bosonization in Integer Quantum Hall Systems
M. Rosenau da Costa, H. Westfahl, A. O. Caldeira
In this work we present a model and a method to study integer quantum Hall (IQH) systems. Making use of the Landau levels structure we divide these two dimensional systems into a s…
Dissipative Stern-Gerlach recombination experiment
Thiago R. Oliveira, A. O. Caldeira
The possibility of obtaining the initial pure state in a usual Stern-Gerlach experiment through the recombination of the two emerging beams is investigated. We have extended the pr…