TY - JOUR
T1 - Three-body recombination at vanishing scattering lengths in an ultracold bose gas
AU - Shotan, Zav
AU - Machtey, Olga
AU - Kokkelmans, Servaas
AU - Khaykovich, Lev
PY - 2014/8/1
Y1 - 2014/8/1
N2 - We report on measurements of three-body recombination loss rates in an ultracold gas of Li7 atoms in the extremely nonuniversal regime where the two-body scattering length vanishes. We show that the loss rate coefficient is well defined and can be described by two-body parameters only: the scattering length a and the effective range Re. We find the rate to be energy independent, and, by connecting our results with previously reported measurements in the universal limit, we cover the behavior of the three-body recombination rate in the whole range from weak to strong two-body interactions. We identify a nontrivial magnetic field value in the nonuniversal regime where the rate should be suppressed.
AB - We report on measurements of three-body recombination loss rates in an ultracold gas of Li7 atoms in the extremely nonuniversal regime where the two-body scattering length vanishes. We show that the loss rate coefficient is well defined and can be described by two-body parameters only: the scattering length a and the effective range Re. We find the rate to be energy independent, and, by connecting our results with previously reported measurements in the universal limit, we cover the behavior of the three-body recombination rate in the whole range from weak to strong two-body interactions. We identify a nontrivial magnetic field value in the nonuniversal regime where the rate should be suppressed.
UR - http://www.scopus.com/inward/record.url?scp=84905587614&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.113.053202
DO - 10.1103/PhysRevLett.113.053202
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C2 - 25126917
SN - 0031-9007
VL - 113
SP - 053202
JO - Physical Review Letters
JF - Physical Review Letters
IS - 5
M1 - 053202
ER -