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Magnetic phase transition in a mixture of two interacting Bose gases at finite temperature
Miki Ota, Stefano Giorgini, Sandro Stringari
The miscibility condition for a binary mixture of two interacting Bose-Einstein condensates is shown to be deeply affected by interaction driven thermal fluctuations. These give ri…
Quantum fluctuations and Gross-Pitaevskii theory
Sandro Stringari
Using the linearized version of the time dependent Gross-Pitaevskii equation we calculate the dynamic response of a Bose-Einstein condensed gas to periodic density and particle per…
Magnetic defects in an unbalanced mixture of two Bose-Einstein condensates
A. Gallemí, L. P. Pitaevskii, S. Stringari +1
When the spectrum of magnetic excitations of a quantum mixture is much softer than the density spectrum, the system becomes effectively incompressible and can host magnetic defects…
Collisionless sound in a uniform two-dimensional Bose gas
Miki Ota, Fabrizio Larcher, Franco Dalfovo +3
Using linear response theory within the Random Phase Approximation, we investigate the propagation of sound in a uniform two dimensional (2D) Bose gas in the collisionless regime.…