%0 Journal Article %1 Rem2013Lifetime %A Rem, B. S. %A Grier, A. T. %A Barbut, I. Ferrier %A Eismann, U. %A Langen, T. %A Navon, N. %A Khaykovich, L. %A Werner, F. %A Petrov, D. S. %A Chevy, F. %A Salomon, C. %D 2013 %I American Physical Society %J Physical Review Letters %K bose\_gas, unitarity %P 163202+ %R 10.1103/physrevlett.110.163202 %T Lifetime of the Bose Gas with Resonant Interactions %U http://dx.doi.org/10.1103/physrevlett.110.163202 %V 110 %X 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.

@article{Rem2013Lifetime, 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.}, added-at = {2014-01-09T15:14:33.000+0100}, author = {Rem, B. S. and Grier, A. T. and Barbut, I. Ferrier and Eismann, U. and Langen, T. and Navon, N. and Khaykovich, L. and Werner, F. and Petrov, D. S. and Chevy, F. and Salomon, C.}, biburl = {https://www.bibsonomy.org/bibtex/2308bcec1d1adb9cc4c1d177ed8b302e9/jaspervh}, citeulike-article-id = {12344768}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/physrevlett.110.163202}, doi = {10.1103/physrevlett.110.163202}, interhash = {4a2fd33bcc2997ca60e2fb2fc1083717}, intrahash = {308bcec1d1adb9cc4c1d177ed8b302e9}, journal = {Physical Review Letters}, keywords = {bose\_gas, unitarity}, month = apr, pages = {163202+}, posted-at = {2013-05-15 14:11:50}, priority = {2}, publisher = {American Physical Society}, timestamp = {2014-01-09T15:14:33.000+0100}, title = {Lifetime of the Bose Gas with Resonant Interactions}, url = {http://dx.doi.org/10.1103/physrevlett.110.163202}, volume = 110, year = 2013 }