Quantum Bose-Bose droplets at a dimensional crossover

Ziń, P.; Pylak, Maciej; Wasak, Tomasz; Gajda, Mariusz; Idziaszek, Zbigniew

doi:10.1103/physreva.98.051603

Cited by 92 publications

(71 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Then, if Λ is larger than typical momenta in the gas, the obtained LHY corrections are cutoff-independent and in good agreement with the existing literature (see e.g. [27][28][29][30]). Now if one applies this method to the dipolar interaction case, it turns out that the resulting corrections to the EoS are cutoff-dependent (the cutoff is not larger than the roton momentum) due to the special character of the DDI (see e.g.…”

Section: Lhy Correctionssupporting

confidence: 89%

See 1 more Smart Citation

Two-dimensional quantum droplets in dipolar Bose gases

Boudjemâa

2019

New J. Phys.

View full text Add to dashboard Cite

We calculate analytically the quantum and thermal fluctuations corrections of a dilute quasi-twodimensional 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.

show abstract

Section: Lhy Correctionssupporting

confidence: 89%

“…Indeed, obtaining reliable estimate for the beyond mean field correction to the equation of state (EoS) in low dimensions is challenging even for Bose systems with contact interactions [27][28][29]. At zero temperature, the LHY corrections to the EoS can be written [10,22] ò dm…”

Section: Lhy Correctionsmentioning

confidence: 99%

Two-dimensional quantum droplets in dipolar Bose gases

Boudjemâa

2019

New J. Phys.

View full text Add to dashboard Cite

show abstract

“…In the 3D case, the LHY term ∼ −ρ 3/2 (for ρ 1 = ρ 2 ≡ ρ) is replaced by one ∼ +ρ 5/2 . A detailed consideration of the crossover from 3D to 1D [12,44,45] in the two-component system is a problem which may be a subject of a separate work. Here, it is relevant to compare the symmetric version of Eq.…”

Section: Model and Methodsmentioning

confidence: 99%

Modulational Instability, Inter-Component Asymmetry, and Formation of Quantum Droplets in One-Dimensional Binary Bose Gases

et al. 2020

View full text Add to dashboard Cite

Quantum droplets are ultradilute liquid states which emerge from the competitive interplay of two Hamiltonian terms, the mean-field energy and beyond-mean-field correction, in a weakly interacting binary Bose gas. We relate the formation of droplets in symmetric and asymmetric two-component one-dimensional boson systems to the modulational instability of a spatially uniform state driven by the beyond-mean-field term. Asymmetry between the components may be caused by their unequal populations or unequal intra-component interaction strengths. Stability of both symmetric and asymmetric droplets is investigated. Robustness of the symmetric solutions against symmetry-breaking perturbations is confirmed. arXiv:1911.02676v3 [cond-mat.quant-gas]

show abstract

“…In future, it will be interesting to understand the nature of higher-order quantum correction in Bose-Fermi interaction, and the role they play in liquid formation, throughout the entire dimensional crossovers [16].…”

Section: Discussionmentioning

confidence: 99%

“…In lower dimensions it is expected that this life-time can be extended because of reduced phase-space available to colliding atoms. Low dimensional systems are therefore of the key interest [14][15][16][17]. In this work we study a possibility of formation of the self-bound low dimensional liquid droplets in a two component mixture of ultracold bosonic and fermionic atoms.…”

Section: Introductionmentioning

confidence: 99%

Self-bound Bose–Fermi liquids in lower dimensions

et al. 2019

Self Cite

View full text Add to dashboard Cite

We study weakly interacting mixtures of ultracold atoms composed of bosonic and fermionic species in 2D and 1D. When interactions between particles are appropriately tuned, self-bound quantum liquids can be formed. We show that while formation of these droplets in 2D is due to the higher order correction terms contributing to the total energy and originating in quantum fluctuations, in 1D geometry the quantum fluctuations have a negligible role on formation of the self-bound systems. The leading mean-field interactions are then sufficient for droplet formation in 1D. We analyze energetic stability for 2D and 1D systems and predict values of equilibrium densities of droplets.

show abstract

Quantum Bose-Bose droplets at a dimensional crossover

Cited by 92 publications

References 54 publications

Two-dimensional quantum droplets in dipolar Bose gases

Two-dimensional quantum droplets in dipolar Bose gases

Modulational Instability, Inter-Component Asymmetry, and Formation of Quantum Droplets in One-Dimensional Binary Bose Gases

Self-bound Bose–Fermi liquids in lower dimensions

Contact Info

Product

Resources

About