Bose-Einstein supersolid phase for a novel type of momentum dependent interaction
arXiv:1005.4027 · doi:10.1103/PhysRevA.83.021602
Abstract
A novel class of non-local interactions between bosons is found to favor a crystalline Bose-Einstein condensation ground state. By using both low energy effective field theory and variational wavefunction method, we compare this state not only with the homogeneous superfluid, as has been done previously, but also with the normal (non-superfluid) crystalline phase and obtain the phase diagram. The key characters are: the interaction potential displays a negative minimum at finite momentum which determines the wavevector of this supersolid phase; and the wavelength corresponding to the momentum minimum needs to be greater than the mean inter-boson distance.
arXiv comment4 pages 3 figures, fig 1 and fig 2 updated
References in corpus (16)
- The physics of dipolar bosonic quantum gases
- Three-dimensional Roton-Excitations and Supersolid formation in Rydberg-excited Bose-Einstein Condensates
- Charge Density Wave in Two-Dimensional Electron Liquid in Weak Magnetic Field
- Ultracold heteronuclear molecules in a 3D optical lattice
- Strongly correlated gases of Rydberg-dressed atoms: quantum and classical dynamics
- Fragmentation of Bose-Einstein Condensates
- Ultracold dense gas of deeply bound heteronuclear molecules
- A superfluid-droplet crystal and a free-space supersolid in a dipole-blockaded gas
- Cold polar molecules in 2D traps: Tailoring interactions with external fields for novel quantum phases
- Photoassociative Production and Trapping of Ultracold KRb Molecules
- Stability of quasi-two-dimensional Bose-Einstein condensates with dominant dipole-dipole interactions
- What makes a crystal supersolid ?
- "Supersolid" self-bound Bose condensates via laser-induced interatomic forces
- Direct absorption imaging of ultracold polar molecules
- p-Wave Resonant Bose Gas: A Finite-Momentum Spinor Superfluid
- Stability of the density-wave state of a dipolar condensate in a pancake trap
Cited by in corpus (11)
- Supersolid Vortex Crystals in Rydberg-dressed Bose-Einstein Condensates
- Elementary excitations of ultracold soft-core bosons across the superfluid-supersolid phase transition
- Physics of higher orbital bands in optical lattices: a review
- Exotic topological density waves in cold atomic Rydberg fermions
- Quantum crystals in a trapped Rydberg-dressed Bose-Einstein condensate
- Supersolid structure and excitation spectrum of soft-core bosons in 3D
- Fragmented-condensate solid of dipolar excitons
- Condensation versus Long-range Interaction: Competing Quantum Phases in Bosonic Optical Lattice Systems at Near-resonant Rydberg Dressing
- Quantum phases of hardcore bosons in two coupled chains: A density matrix renormalization group study
- Quantum crystallography of Rydberg-dressed Bose gases on a square lattice
- Topological Supersolidity of Dipolar Fermi Gases in a Spin-Dependent Optical Lattice