SciPost Physics

SciPost Phys. 6, 079 (2019) · published 28 June 2019

• doi: 10.21468/SciPostPhys.6.6.079
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Abstract

We study the stability of a zero temperature mixture of attractively interacting degenerate bosons and spin-polarized fermions in the absence of confinement. We demonstrate that higher order corrections to the standard mean-field energy can lead to a formation of Bose-Fermi liquid droplets -- self-bound systems in three-dimensional space. The stability analysis of the homogeneous case is supported by numerical simulations of finite systems by explicit inclusion of surface effects. We discuss the experimental feasibility of formation of quantum droplets and indicate the main obstacle -- inelastic three-body collisions.

• Rakshit et al., Self-bound Bose–Fermi liquids in lower dimensions
  New J. Phys. 21, 073027 (2019) [Crossref]
• Zin et al., Revisiting a stability problem of two-component quantum droplets
  Phys. Rev. A 103, 013312 (2021) [Crossref]
• Gangwar et al., Exploring the role of beyond mean-field interaction in the structure and dynamics of one-dimensional quantum droplets
  J. Phys. B: At. Mol. Opt. Phys. 56, 165302 (2023) [Crossref]
• Gautam et al., Limitation of the Lee–Huang–Yang interaction in forming a self-bound state in Bose–Einstein condensates
  Annals of Physics 409, 167917 167917 (2019) [Crossref]
• Cui et al., Droplet under confinement: Competition and coexistence with a soliton bound state
  Phys. Rev. Research 3, L012027 (2021) [Crossref]
• Pi et al., Rotating mixed He3−He4 nanodroplets
  Phys. Rev. B 102, 060502 (2020) [Crossref]
• Englezos et al., Correlated dynamics of collective droplet excitations in a one-dimensional harmonic trap
  Phys. Rev. A 107, 023320 (2023) [Crossref]
• Gordillo, Self-bound clusters of one-dimensional fermionic mixtures
  Phys. Rev. Research 5, 043144 (2023) [Crossref]
• Pathak et al., Dynamics of quantum droplets in an external harmonic confinement
  Sci Rep 12, 6904 (2022) [Crossref]
• Wang et al., Quantum Droplets in a Mixture of Bose–Fermi Superfluids
  Chinese Phys. Lett. 37, 076701 (2020) [Crossref]
• Parit et al., Supersolid behavior in one-dimensional self-trapped Bose–Einstein condensate
  J. Phys. B: At. Mol. Opt. Phys. 54, 105001 (2021) [Crossref]
• Karpiuk et al., Modelling quantum aspects of disruption of a white dwarf star by a black hole
  Sci Rep 11, 2286 (2021) [Crossref]
• Bhatia et al., Investigation of one-dimensional quantum droplets in a temporally perturbed external harmonic trap
  Physics Letters A 492, 129228 129228 (2023) [Crossref]
• Bisset et al., Quantum Droplets of Dipolar Mixtures
  Phys. Rev. Lett. 126, 025301 (2021) [Crossref]
• Tylutki et al., Collective excitations of a one-dimensional quantum droplet
  Phys. Rev. A 101, 051601 (2020) [Crossref]
• Hryhorchak et al., Second root of dilute Bose-Fermi mixtures
  J. Phys. A: Math. Theor. 56, 205003 (2023) [Crossref]
• Andreev et al., A bosonic bright soliton in a mixture of repulsive Bose–Einstein condensate and polarized ultracold fermions under the influence of pressure evolution
  Laser Phys. 31, 015501 (2021) [Crossref]
• Ma et al., Borromean Droplet in Three-Component Ultracold Bose Gases
  Phys. Rev. Lett. 127, 043002 (2021) [Crossref]
• Zin et al., Zero-energy modes of two-component Bose–Bose droplets
  New J. Phys. 23, 033022 (2021) [Crossref]
• Ma et al., Quantum-fluctuation-driven dynamics of droplet splashing, recoiling, and deposition in ultracold binary Bose gases
  Phys. Rev. Research 5, 013100 (2023) [Crossref]
• Karpiuk et al., Bistability of Bose–Fermi mixtures
  New J. Phys. 22, 103025 (2020) [Crossref]
• Katsimiga et al., Solitary waves in a quantum droplet-bearing system
  Phys. Rev. A 107, 063308 (2023) [Crossref]
• Patel et al., Sound Propagation in a Bose-Fermi Mixture: From Weak to Strong Interactions
  Phys. Rev. Lett. 131, 083003 (2023) [Crossref]
• Otajonov, Quantum droplets in three-dimensional Bose–Einstein condensates
  J. Phys. B: At. Mol. Opt. Phys. 55, 085001 (2022) [Crossref]
• Grochowski et al., Breathing Mode of a Bose-Einstein Condensate Immersed in a Fermi Sea
  Phys. Rev. Lett. 125, 103401 (2020) [Crossref]
• Gangwar et al., Dynamics of quantum solitons in Lee-Huang-Yang spin-orbit-coupled Bose-Einstein condensates
  Phys. Rev. A 106, 063315 (2022) [Crossref]
• Böttcher et al., New states of matter with fine-tuned interactions: quantum droplets and dipolar supersolids
  Rep. Prog. Phys. 84, 012403 (2021) [Crossref]
• Kartashov et al., Structured heterosymmetric quantum droplets
  Phys. Rev. Research 2, 033522 (2020) [Crossref]