Transversal effects on the ground-state of hard-core dipolar bosons in one-dimensional optical lattices

Abstract

Polar lattice gases are usually assumed to have an inter-site interaction that decays with the inter-particle distance $r$ as $1/r^3$. However, a loose-enough transversal confinement may strongly modify the dipolar decay in one-dimensional lattices. We show that this modification alters significantly the ground-state properties of hard-core dipolar bosons. For repulsive inter-site interactions, the corrected decay alters the conditions for devil's staircase insulators, affecting significantly the particle distribution in the presence of an overall harmonic confinement. For attractive interactions, it results in a reduction of the critical dipole interaction for the formation of self-bound clusters, and for a marked enhancement of the region of liquefied lattice droplets.

6 pages, 5 figures

References in corpus (7)

• Many-Body Physics with Ultracold Gases
• Ultracold atoms out of equilibrium
• Hidden order in 1D Bose insulators
• Tunable itinerant spin dynamics with polar molecules
• Light-induced quantum droplet phases of lattice bosons in multimode cavities
• Lattice control of non-ergodicity in a polar lattice gas
• Superexchange Liquefaction of Strongly Correlated Lattice Dipolar Bosons

Cited by in corpus (4)

• Dipolar quantum solids emerging in a Hubbard quantum simulator
• Recent progress on quantum simulations of non-standard Bose-Hubbard models
• Ground states of one-dimensional dipolar lattice bosons at unit filling
• Many-body phases from effective geometrical frustration and long-range interactions in a subwavelength lattice