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Statistics of population difference for cold bosons in a double-well potential

2012; IOP Publishing; Volume: 45; Issue: 8 Linguagem: Inglês

10.1088/0953-4075/45/8/085304

1361-6455

Tomasz Górski, Kazimierz Rzążewski,

Atomic and Subatomic Physics Research

We study fluctuations in the atom number difference between halves of harmonically trapped Bose gas split by a delta potential. It is shown that the splitting potential affects fluctuations significantly. An analytical expression for the variance of atom number difference for the impenetrable potential barrier is given. Calculations are performed in the grand canonical ensemble.