TY - JOUR
T1 - Ground-State Properties of Unitary Bosons
T2 - From Clusters to Matter
AU - Carlson, J.
AU - Gandolfi, S.
AU - Van Kolck, U.
AU - Vitiello, S. A.
N1 - Funding Information:
We thank Daekyoung Kang for many valuable discussions. The work of J. C. and S. G. was supported by the NUCLEI SciDAC program, and by the U.S. DOE under Contract No. DE-AC52-06NA25396. The work of U. vK. was supported in part by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Award No. DE-FG02-04ER41338, and by the European Union Research and Innovation program Horizon 2020 under Grant Agreement No. 654002. S. V. thanks the hospitality and financial support from LANL and the facilities offered by CENAPAD-SP. Computational resources have been provided by Los Alamos Open Supercomputing. We also used resources provided by NERSC, which is supported by the U.S. DOE under Contract No. DE-AC02-05CH11231.
Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/11/29
Y1 - 2017/11/29
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.119.223002
DO - 10.1103/PhysRevLett.119.223002
M3 - Article
C2 - 29286794
AN - SCOPUS:85037676679
VL - 119
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 22
M1 - 223002
ER -