Huge quantum particle number fluctuations in a two-component Bose gas in a double-well potential
arXiv:1004.1541 · doi:10.1103/PhysRevA.84.033614
Abstract
Two component Bose gas in a double well potential with repulsive interactions may undergo a phase separation transition if the inter-species interactions outweigh the intra-species ones. We analyze the transition in the strong interaction limit within the two-mode approximation. Numbers of particles in each potential well are equal and constant. However, at the transition point, the ground state of the system reveals huge fluctuations of numbers of particles belonging to the different gas components. That is, probability for observation of any mixture of particles in each potential well becomes uniform.
5 pages, 3 figures, substantially revised version
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- Delocalization effects, entanglement entropy and spectral collapse of boson mixtures in a double well
- Many-particle interference in a two-component bosonic Josephson junction: an all-optical simulation
- Dynamical effects of exchange symmetry breaking in mixtures of interacting bosons
- Number-phase uncertainty and quantum dynamics of bosons and fermions interacting with a finite range and large scattering length in a double-well potential