2013/07/03 by J. B. Sudharsan, J B Sudharsan, R. Radha +3 · 1 citation
Physics and Astronomy · #Binary number #Cold Atom Physics and Bose-Einstein Condensates #Constant (computer programming) #Interaction model #Lattice (music) #Nonlinear Photonic Systems #Optical lattice #Sign (mathematics) #Strong Light-Matter Interactions #Weak interaction #cond-mat.quant-gas
paper · pdf · doi:10.1088/0953-4075/46/15/155302
published as J. Phys. B: At. Mol. Opt. Phys. 46, 155302 (2013) · Accepted for publication in Journal of Physics B
arxiv created 2013/07/03 · openalex publication_date 2013/07/22 · arxiv updated 2014/12/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the impact of collisionally inhomogeneous binary and three body interaction on Bose-Einstein condensates (BECs) of a dilute gas in a bichromatic optical lattice. We observe that the localized matter wave density which decreases after the introduction of repulsive spatially inhomogeneous binary interaction can be sustained by the addition of constant attractive binary strength in equal amounts. If the balance between repulsive spatially inhomogeneous binary interaction and constant attractive interaction is disturbed, the condensates collapse. Reversal of sign of interaction ensures the longevity of BECs. Any imbalance between attractive spatially inhomogeneous interaction and constant repulsive interaction either results in the collapse of BECs or in the occupation of the condensates at multiple sites on either sides. The introduction of a weak three body interaction in phase with the binary interaction increases the extent of instability of BECs. Reversing the sign of spatially inhomogeneous and constant interaction enhances the stability of BECs.