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  Quantum Bose-Bose droplets at a dimensional crossover

Zin, P., Pylak, M., Wasak, T., Gajda, M., & Idziaszek, Z. (2018). Quantum Bose-Bose droplets at a dimensional crossover. Physical Review A, 98(5): 051603. doi:10.1103/PhysRevA.98.051603.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0002-BA90-9 Version Permalink: https://hdl.handle.net/21.11116/0000-0002-C6A9-0
Genre: Journal Article

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1805.11186.pdf (Preprint), 456KB
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https://journals.aps.org/pra/abstract/10.1103/PhysRevA.98.051603 (Publisher version)
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 Creators:
Zin, Pawel1, Author
Pylak, Maciej1, Author
Wasak, Tomasz1, Author
Gajda, Mariusz1, Author
Idziaszek, Zbigniew1, Author
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 MPIPKS: Ultracold matter
 Abstract: We study liquid quantum droplets in a mixture of two-component Bose-Einstein condensates under variable confinement introduced along one or two spatial dimensions. Although the atom-atom scattering has a three- dimensional character, discreteness of the available modes in the reduced dimension(s) strongly influences the zero-point energy, which for a weakly interacting three-dimensional system is given by the Lee-Huang-Yang term. Here, we generalize the result of Lee, Huang, and Yang and calculate the higher order corrections to the mean-field energy for a single component Bose-Einstein condensate under condition of a tight confinement in one or two spatial directions. We apply our results to the two-component mixture of bosonic species under conditions favorable for the creation of quantum liquid droplets, which constitute a perfect playground for studies of the beyond mean-field effects. Our findings allow one to analyze the properties of quantum droplets at the dimensional crossover and provide demanding conditions for accessing quasilow dimensions. They also pave a way for experimental exploration of this state of matter in reduced dimensions.

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 Dates: 2018-11-262018-11
 Publication Status: Issued
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 Identifiers: ISI: 000451329500002
DOI: 10.1103/PhysRevA.98.051603
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Title: Physical Review A
  Other : Physical Review A: Atomic, Molecular, and Optical Physics
  Other : Phys. Rev. A
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 98 (5) Sequence Number: 051603 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: https://pure.mpg.de/cone/journals/resource/954925225012_2