TY - JOUR
AU - Lena Dogra
AU - Jake Glidden
AU - Timon Hilker
AU - Christoph Eigen
AU - Eric Cornell
AU - Robert Smith
AU - Zoran Hadzibabic
AB - Three-body recombination in quantum gases is traditionally associated with heating, but it was recently found that it can also cool the gas. We show that in a partially condensed three-dimensional homogeneous Bose gas three-body loss could even purify the sample, that is, reduce the entropy per particle and increase the condensed fraction η. We predict that the evolution of η under continuous three-body loss can, depending on small changes in the initial conditions, exhibit two qualitatively different behaviors--if it is initially above a certain critical value, η, increases further, whereas clouds with lower initial η evolve towards a thermal gas. These dynamical effects should be observable under realistic experimental conditions.
BT - Physical Review Letters
DA - 2019-07
DO - 10.1103/PhysRevLett.123.020405
N2 - Three-body recombination in quantum gases is traditionally associated with heating, but it was recently found that it can also cool the gas. We show that in a partially condensed three-dimensional homogeneous Bose gas three-body loss could even purify the sample, that is, reduce the entropy per particle and increase the condensed fraction η. We predict that the evolution of η under continuous three-body loss can, depending on small changes in the initial conditions, exhibit two qualitatively different behaviors--if it is initially above a certain critical value, η, increases further, whereas clouds with lower initial η evolve towards a thermal gas. These dynamical effects should be observable under realistic experimental conditions.
PY - 2019
EP - 020405
T2 - Physical Review Letters
TI - Can Three-Body Recombination Purify a Quantum Gas?
UR - https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.020405
VL - 123
SN - 0031-9007
ER -