How creating one additional well can generate Bose-Einstein condensation
arXiv:2002.09997 · doi:10.1038/s42005-021-00533-3
Abstract
The realization of Bose-Einstein condensation in ultracold trapped gases has led to a revival of interest in that fascinating quantum phenomenon. This experimental achievement necessitated both extremely low temperatures and sufficiently weak interactions. Particularly in reduced spatial dimensionality even an infinitesimal interaction immediately leads to a departure to quasi-condensation. We propose a system of strongly interacting bosons which overcomes those obstacles by exhibiting a number of intriguing related features: (i) The tuning of just a single control parameter drives a transition from quasi-condensation to complete condensation, (ii) the destructive influence of strong interactions is compensated by the respective increased mobility, (iii) topology plays a crucial role since a crossover from one- to `infinite'-dimensionality is simulated, (iv) a ground state gap opens which makes the condensation robust to thermal noise. Remarkably, all these features can be derived by analytical and exact numerical means despite the non-perturbative character of the system.
arXiv commentclose to published version; title has been changed
References in corpus (43)
- Many-Body Physics with Ultracold Gases
- Theory of Bose-Einstein condensation in trapped gases
- Feshbach Resonances in Ultracold Gases
- Cold bosonic atoms in optical lattices
- The density-matrix renormalization group
- Scaling of Entanglement close to a Quantum Phase Transitions
- Entanglement in a simple quantum phase transition
- Condensation of Pairs of Fermionic Atoms Near a Feshbach Resonance
- One dimensional Bosons: From Condensed Matter Systems to Ultracold Gases
- Transition from a strongly interacting 1D superfluid to a Mott insulator
- Realization of Bose-Einstein condensates in lower dimensions
- Experimental Study of the BEC-BCS Crossover Region in Lithium 6
- Regimes of quantum degeneracy in trapped 1D gases
- Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
- Exploring phase coherence in a 2D lattice of Bose-Einstein condensates
- Superflow in a toroidal Bose-Einstein condensate: an atom circuit with a tunable weak link
- Theory of the Weakly Interacting Bose Gas
- Optical ferris wheel for ultracold atoms
- Fermionization of two distinguishable fermions
- Tensor product methods and entanglement optimization for ab initio quantum chemistry
- Observation of Phase Fluctuations in Bose-Einstein Condensates
- Measuring orbital interaction using quantum information theory
- Quantum many particle systems in ring-shaped optical lattices
- Quantum data compression, quantum information generation, and the density-matrix renormalization group method
- Multiconfigurational time-dependent Hartree approaches for indistinguishable particles
- Reduced density matrices and coherence of trapped interacting bosons
- Finite one dimensional impenetrable Bose systems: Occupation numbers
- Emergence of quasi-condensates of hard-core bosons at finite momentum
- Universal properties of hard-core bosons confined on one-dimensional lattices
- Correlated Exciton Transport in Rydberg-Dressed-Atom Spin Chains
- Bose-Einstein condensation in large time-averaged optical ring potentials
- Universal correlations of trapped one-dimensional impenetrable bosons
- Bose-Einstein Condensation on inhomogeneous complex networks
- Bose-Einstein condensation in inhomogeneous Josephson arrays
- Transition from 3D to 1D in Bose Gases at Zero Temperature
- Quasi One-Dimensional Bosons in Three-dimensional Traps: From Strong Coupling to Weak Coupling Regime
- Bose-Einstein Condensation on inhomogeneous networks: mesoscopic aspects versus thermodynamic limit
- Topology Induced Spatial Bose-Einstein Condensation for Bosons on Star-Shaped Optical Networks
- Phase diagram of the Bose-Hubbard Model on Complex Networks
- Crossover from one to three dimensions for a gas of hard-core bosons
- Bose-Fermi variational theory of the BEC-Tonks crossover
- Universal upper bounds on the Bose-Einstein condensate and the Hubbard star
- Topology-induced confined superfluidity in inhomogeneous arrays