Two-dimensional quantum droplets in dipolar Bose gases
arXiv:1709.07088 · doi:10.1088/1367-2630/ab3fc7
Abstract
We calculate analytically the quantum and thermal fluctuations corrections of a dilute quasi-two-dimensional Bose-condensed dipolar gas. We show that these fluctuations may change their character from repulsion to attraction in the density-temperature plane owing to the striking momentum dependence of the dipole-dipole interactions. The dipolar instability is halted by such unconventional beyond mean field corrections leading to the formation of a droplet phase. The equilibrium features and coherence properties exhibited by such droplets are deeply discussed. At finite temperature, we find that the equilibrium density crucially depends on the temperature and on the confinement strength and thus, a stable droplet can exist only at ultralow temperature due to the strong thermal fluctuations.
7 pages, 4 figures
References in corpus (17)
- Self-bound droplets of a dilute magnetic quantum liquid
- Quantum-fluctuation-driven crossover from a dilute Bose-Einstein condensate to a macro-droplet in a dipolar quantum fluid
- Observation of a dipolar quantum gas with metastable supersolid properties
- Transient supersolid properties in an array of dipolar quantum droplets
- Emergence of coherence in a uniform quasi-two-dimensional Bose gas
- Observation of Roton Mode Population in a Dipolar Quantum Gas
- Thermalization near integrability in a dipolar quantum Newton's cradle
- Bogoliubov modes of a dipolar condensate in a cylindrical trap
- Two-dimensional solitons and quantum droplets supported by competing self- and cross-interactions in spin-orbit-coupled condensates
- Probing the roton excitation spectrum of a stable dipolar Bose gas
- Quantum Bose-Bose droplets at a dimensional crossover
- Droplets of trapped quantum dipolar bosons
- Universal Properties of Two-Dimensional Boson Droplets
- Fluctuations and quantum self-bound droplets in a dipolar Bose-Bose mixture
- Properties of strongly dipolar Bose gases beyond the Born approximation
- Nonuniversal beyond mean field properties of quasi-two-dimensional dipolar Bose gases
- Dipolar Bose gas with three-body interactions at finite temperature
Cited by in corpus (11)
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- Many-body and temperature effects in two-dimensional quantum droplets in Bose-Bose mixtures
- Vortex-ring quantum droplets in a radially-periodic potential
- Quantum correlations in dipolar droplets: Time-dependent Hartree-Fock-Bogoliubov theory
- Quantum liquid droplets in Bose mixtures with weak disorder
- Two-dimensional quantum droplets in binary quadrupolar condensates
- Self-consistent Description of Bose-Bose Droplets: Modified Gapless Hartree-Fock-Bogoliubov Method
- Ground-state properties of dipolar Bose-Einstein condensates with spin-orbit coupling and quantum fluctuations
- Superfluidity and coherence in uniform dipolar binary Bose mixtures
- Finite-frequency normal and superfluid drag effects in two-component atomic Bose-Einstein condensates