Ground state and excitation properties of soft-core bosons
arXiv:1402.3313 · doi:10.1007/s10909-014-1192-7
Abstract
We study the physics of soft-core bosons at zero temperature in two dimensions for a class of potentials that could be realised in experiments with Rydberg dressed Bose-Einstein condensates. We analyze the ground state properties of the system in detail and provide a complete description of the excitation spectra in both superfluid, supersolid and crystalline phase for a wide range of interaction strengths and densities. In addition we describe a method to extract the transverse gapless excitation modes in the phases with broken translational symmetry within the framework of path integral Monte Carlo methods.
10 pages, 4 figures
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- Supersolid phases of bosonic particles in a bubble trap
- Freezing of soft-core bosons at zero temperature: A variational theory
- Quantum Critical Behavior of One-Dimensional Soft Bosons in the Continuum
- Rotons and Bose condensation in Rydberg-dressed Bose Gases
- Confined Meson Excitations in Rydberg-Atom Arrays Coupled to a Cavity Field
- Clusterization of weakly-interacting bosons in one dimension: an analytic study at zero temperature
- Rydberg Noisy-Dressing and applications in making soliton-molecules and droplet quasi-crystals
- Quantum crystallography of Rydberg-dressed Bose gases on a square lattice
- Quasiparticle spectra of supersolid lattice gases at near-resonant Rydberg-dressing
- Ground state phase diagram of ultrasoft bosons
- Exploring Bifurcations in Bose-Einstein Condensates via Phase Field Crystal Models
- Zonal estimators for quasiperiodic bosonic many-body phases
- Thermal and Quantum Fluctuation Effects in Quasiperiodic Systems in External Potentials
- Static and dynamic properties of self-bound droplets of light in hot vapours
- Dynamics of position disordered Ising spins with a soft-core potential
- Static density response of one-dimensional soft bosons across the clustering transition
- Evolution of static and dynamical density correlations in a one-dimensional soft-core gas from the Tonks-Girardeau limit to a clustering fluid
- Density and pseudo-spin rotons in a bilayer of soft-core bosons