Quantum fluctuations of a Bose-Josephson junction in a quasi-one-dimensional ring trap
Quantum fluctuations of a Bose-Josephson junction in a quasi-one-dimensional ring trap
Using a Luttinger-liquid approach we study the quantum fluctuations of a Bose-Josephson junction, consisting of a Bose gas confined to a quasi one-dimensional ring trap which contains a localized repulsive potential barrier. For an infinite barrier we study the one-particle and two-particle static correlation functions. For the one-body density-matrix we …