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Phase diagram of quasi-two-dimensional bosons in a laser-speckle potential

Autor
Astrakharchik, G.; Krutitsky, K.V.; Navez, P.
Tipus d'activitat
Article en revista
Revista
Physical review A
Data de publicació
2013-06
Volum
87
Número
6
Pàgina inicial
1
Pàgina final
5
DOI
https://doi.org/10.1103/PhysRevA.87.061601 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/104376 Obrir en finestra nova
URL
https://journals.aps.org/pra/pdf/10.1103/PhysRevA.87.061601 Obrir en finestra nova
Resum
We have studied the phase diagram of a quasi-two-dimensional interacting Bose gas at zero temperature in the presence of random potential created by laser speckles. The superfluid fraction and the fraction of particles with zero momentum are obtained within the mean-field Gross-Pitaevskii theory and in diffusion Monte Carlo simulations. We find a transition from the superfluid to the insulating state when the strength of the disorder grows. Estimations of the critical parameters are compared wit...
Citació
Astrakharchik, G., Krutitsky, K.V., Navez, P. Phase diagram of quasi-two-dimensional bosons in a laser-speckle potential. "Physical review A", Juny 2013, vol. 87, núm. 6, p. 1-5.
Paraules clau
Monte Carlo methods, Phase diagrams Speckle, Two dimensional
Grup de recerca
SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity

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