Scientific article
Open access

Three-body constrained bosons in a double-well optical lattice

Published inPhysical Review. A, vol. 100, no. 1, 013627
Publication date2019

We analyze the ground-state properties of three-body constrained bosons in a one-dimensional optical lattice with staggered hoppings analogous to the double-well optical lattice. By considering attractive and repulsive on-site interactions between the bosons, we obtain the phase diagram which exhibits various quantum phases. Due to the double-well geometry and three-body constraint, several gapped phases such as the Mott insulators and dimer–bond-order phases emerge at commensurate densities in the repulsive interaction regime. Attractive interaction leads to the pair formation which leads to the pair–bond-order phase at unit filling, which resembles the valence-bond solid phase of composite bosonic pairs. At incommensurate densities, we see the signatures of the gapless pair superfluid phase.

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Citation (ISO format)
MONDAL, Suman, GRESCHNER, Sebastian, MISHRA, Tapan. Three-body constrained bosons in a double-well optical lattice. In: Physical Review. A, 2019, vol. 100, n° 1, p. 013627. doi: 10.1103/PhysRevA.100.013627
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Article (Published version)
ISSN of the journal1050-2947

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