@article{436a8586ca54450e866315ff4d58917b,
title = "Lifetime of the Bose gas with resonant interactions",
abstract = "We study the lifetime of a Bose gas at and around unitarity using a Feshbach resonance in lithium 7. At unitarity, we measure the temperature dependence of the three-body decay coefficient L3. Our data follow a L3=λ3/T2 law with λ3=2.5(3) stat(6)syst×10-20 (μK)2 cm6 s -1 and are in good agreement with our analytical result based on zero-range theory. Varying the scattering length a at fixed temperature, we investigate the crossover between the finite-temperature unitary region and the previously studied regime where |a| is smaller than the thermal wavelength. We find that L3 is continuous across the resonance, and over the whole a<0 range our data quantitatively agree with our calculation.",
author = "Rem, {B. S.} and Grier, {A. T.} and I. Ferrier-Barbut and U. Eismann and T. Langen and N. Navon and L. Khaykovich and F. Werner and Petrov, {D. S.} and F. Chevy and C. Salomon",
year = "2013",
month = apr,
day = "19",
doi = "10.1103/PhysRevLett.110.163202",
language = "אנגלית",
volume = "110",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "16",
}