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4 papers · 1 filter
Variational Approach to the Dynamics of Bose-Einstein Condensates.I --Variational Ansatz and Quantum Dynamics--
Y. Tsue, D. Vautherin, T. Matsui
Variational method is applied to describe Bose-Einstein condensates (BEC) interacting via a pseudo-potential, taking into account quantum fluctuations around the mean field by the…
Mott transition from a diluted exciton gas to a dense electron-hole plasma in a single V-shaped quantum wire
Thierry Guillet, Roger Grousson, Valia Voliotis +3
We report on the study of many-body interactions in a single high quality V-shaped quantum wire by means of continuous and time-resolved microphotoluminescence. The transition from…
Local disorder and optical properties in V-shaped quantum wires : towards one-dimensional exciton systems
Thierry Guillet, Roger Grousson, Valia Voliotis +2
The exciton localization is studied in GaAs/GaAlAs V-shaped quantum wires (QWRs) by high spatial resolution spectroscopy. Scanning optical imaging of different generations of sampl…
Statistics of lowest droplets in two-dimensional Gaussian Ising spin glasses
Picco Marco, Ritort Felix, Sales Marta
A new approach to determine the value of the zero-temperature thermal exponent theta in spin glasses is presented. It consists in describing the energy level spectrum in spin glass…