Anomalous buoyancy of quantum bubbles in immiscible Bose mixtures

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung

Autoren

  • Daniel Edler
  • L. A. Peña Ardila
  • Cesar R. Cabrera
  • Luis Santos

Organisationseinheiten

Externe Organisationen

  • Ludwig-Maximilians-Universität München (LMU)
  • Munich Center for Quantum Science and Technology (MCQST)
  • Max-Planck-Institut für Quantenoptik (MPQ)
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Details

OriginalspracheEnglisch
Aufsatznummer033017
FachzeitschriftPhysical Review Research
Jahrgang4
Ausgabenummer3
PublikationsstatusVeröffentlicht - 11 Juli 2022

Abstract

Buoyancy is a well-known effect in immiscible binary Bose-Einstein condensates. Depending on the differential confinement experienced by the two components, a bubble of one component sitting at the center of the other eventually floats to the surface, around which it spreads either totally or partially. We discuss how quantum fluctuations may significantly change the volume and position of immiscible bubbles. We consider the particular case of two miscible components, forming a pseudo-scalar bubble condensate with enhanced quantum fluctuations (quantum bubble), immersed in a bath provided by a third component, with which they are immiscible. We show that in such a peculiar effective binary mixture, quantum fluctuations change the equilibrium of pressures that define the bubble volume and modify as well the criterion for buoyancy. Once buoyancy sets in, in contrast to the mean-field case, quantum fluctuations may place the bubble at an intermediate position between the center and the surface. At the surface, the quantum bubble may transition into a floating self-bound droplet.

ASJC Scopus Sachgebiete

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Anomalous buoyancy of quantum bubbles in immiscible Bose mixtures. / Edler, Daniel; Ardila, L. A. Peña; Cabrera, Cesar R. et al.
in: Physical Review Research, Jahrgang 4, Nr. 3, 033017, 11.07.2022.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung

Edler, D, Ardila, LAP, Cabrera, CR & Santos, L 2022, 'Anomalous buoyancy of quantum bubbles in immiscible Bose mixtures', Physical Review Research, Jg. 4, Nr. 3, 033017. https://doi.org/10.1103/PhysRevResearch.4.033017, https://doi.org/10.1103/PhysRevResearch.4.033017
Edler, D., Ardila, L. A. P., Cabrera, C. R., & Santos, L. (2022). Anomalous buoyancy of quantum bubbles in immiscible Bose mixtures. Physical Review Research, 4(3), Artikel 033017. https://doi.org/10.1103/PhysRevResearch.4.033017, https://doi.org/10.1103/PhysRevResearch.4.033017
Edler D, Ardila LAP, Cabrera CR, Santos L. Anomalous buoyancy of quantum bubbles in immiscible Bose mixtures. Physical Review Research. 2022 Jul 11;4(3):033017. doi: 10.1103/PhysRevResearch.4.033017, 10.1103/PhysRevResearch.4.033017
Edler, Daniel ; Ardila, L. A. Peña ; Cabrera, Cesar R. et al. / Anomalous buoyancy of quantum bubbles in immiscible Bose mixtures. in: Physical Review Research. 2022 ; Jahrgang 4, Nr. 3.
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abstract = " Buoyancy is a well-known effect in immiscible binary Bose-Einstein condensates. Depending on the differential confinement experienced by the two components, a bubble of one component sitting at the center of the other eventually floats to the surface, around which it spreads either totally or partially. We discuss how quantum fluctuations may significantly change the volume and position of immiscible bubbles. We consider the particular case of two miscible components, forming a pseudo-scalar bubble condensate with enhanced quantum fluctuations (quantum bubble), immersed in a bath provided by a third component, with which they are immiscible. We show that in such a peculiar effective binary mixture, quantum fluctuations change the equilibrium of pressures that define the bubble volume and modify as well the criterion for buoyancy. Once buoyancy sets in, in contrast to the mean-field case, quantum fluctuations may place the bubble at an intermediate position between the center and the surface. At the surface, the quantum bubble may transition into a floating self-bound droplet. ",
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N1 - We acknowledge support of the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy EXC-2123 Quantum Frontiers No. 390837967 and No. FOR 2247. C.R.C. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie SkłodowskaCurie Grant Agreement No. 897142.

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N2 - Buoyancy is a well-known effect in immiscible binary Bose-Einstein condensates. Depending on the differential confinement experienced by the two components, a bubble of one component sitting at the center of the other eventually floats to the surface, around which it spreads either totally or partially. We discuss how quantum fluctuations may significantly change the volume and position of immiscible bubbles. We consider the particular case of two miscible components, forming a pseudo-scalar bubble condensate with enhanced quantum fluctuations (quantum bubble), immersed in a bath provided by a third component, with which they are immiscible. We show that in such a peculiar effective binary mixture, quantum fluctuations change the equilibrium of pressures that define the bubble volume and modify as well the criterion for buoyancy. Once buoyancy sets in, in contrast to the mean-field case, quantum fluctuations may place the bubble at an intermediate position between the center and the surface. At the surface, the quantum bubble may transition into a floating self-bound droplet.

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