Ground-State Properties of Unitary Bosons: From Clusters to Matter

J. Carlson, S. Gandolfi, Ubirajara Van Kolck, S. A. Vitiello

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The properties of cold Bose gases at unitarity have been extensively investigated in the last few years both theoretically and experimentally. In this Letter we use a family of interactions tuned to two-body unitarity and very weak three-body binding to demonstrate the universal properties of both clusters and matter. We determine the universal properties of finite clusters up to 60 particles and, for the first time, explicitly demonstrate the saturation of energy and density with particle number and compare with bulk properties. At saturation in the bulk we determine the energy, density, two- and three-body contacts, and the condensate fraction. We find that uniform matter is more bound than three-body clusters by nearly 2 orders of magnitude, the two-body contact is very large in absolute terms, and yet the condensate fraction is also very large, greater than 90%. Equilibrium properties of these systems may be experimentally accessible through rapid quenching of weakly interacting boson superfluids.

Original languageEnglish (US)
Article number223002
JournalPhysical Review Letters
Volume119
Issue number22
DOIs
StatePublished - Nov 29 2017

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bosons
ground state
condensates
saturation
flux density
gases
interactions
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ground-State Properties of Unitary Bosons : From Clusters to Matter. / Carlson, J.; Gandolfi, S.; Van Kolck, Ubirajara; Vitiello, S. A.

In: Physical Review Letters, Vol. 119, No. 22, 223002, 29.11.2017.

Research output: Contribution to journalArticle

Carlson, J. ; Gandolfi, S. ; Van Kolck, Ubirajara ; Vitiello, S. A. / Ground-State Properties of Unitary Bosons : From Clusters to Matter. In: Physical Review Letters. 2017 ; Vol. 119, No. 22.
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