Phase diagram of dipolar bosons in 2D with tilted polarization

Abstract

We analyze the ground state of a system of dipolar bosons moving in the $XY$ plane and such that their dipolar moments are all aligned in a fixed direction in space. We focus on the general case where the polarization field forms a generic angle $\alpha$ with respect to the $Z$ axis. We use the Path Integral Ground State method to analyze the static properties of the system as both $\alpha$ and the density $n$ vary over a wide range were the system is stable. We use the maximum of the static structure function as an order parameter to characterize the different phases and the transition lines among them. We find that aside of a superfluid gas and a solid phase, the system reaches a stripe phase at large tilting angles that is entirely induced by the anisotropic character of the interaction. We also show that the quantum phase transition from the gas to the stripe phase is of second order, and report approximate values for the critical exponents.

arXiv comment4 figures

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Cited by in corpus (21)

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• Competing quantum phases of hard-core boson with tilted dipole-dipole interaction
• Berezinskii-Kosterlitz-Thouless Transition in Two-Dimensional Dipolar Stripes
• Supersolid Striped Droplets in a Raman Spin-Orbit-Coupled System
• Dipolar condensates with tilted dipoles in a pancake-shaped confinement
• Higher-order effective interactions for bosons near a two-body zero crossing
• Quantum phases of dipolar rotors on two-dimensional lattices
• Striped Ultradilute Liquid of Dipolar Bosons in Two Dimensions
• Universal properties of dipolar Bose polarons in two dimensions
• Pseudopotentials for an ultracold dipolar gas
• Universal Properties of Anisotropic Dipolar Bosons in Two Dimensions
• Beyond-mean-field phases of rotating dipolar condensates
• Tilted dipolar bosons in the quasi-two-dimensional regime: From liquid stripes to droplets
• Ground and excited states of coupled exciton liquids in electron-hole quadrilayers
• Finite temperature instabilities of 2D dipolar Bose gas at arbitrary tilt angle
• Determination of hydrogen concentration in solids by transmission ERDA under nuclear-elastically enhanced recoiling of H by 8 and 9 MeV He
• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics