Stability of a Unitary Bose Gas
Citations Over TimeTop 10% of 2013 papers
Abstract
We study the stability of a thermal (39)K Bose gas across a broad Feshbach resonance, focusing on the unitary regime, where the scattering length a exceeds the thermal wavelength λ. We measure the general scaling laws relating the particle-loss and heating rates to the temperature, scattering length, and atom number. Both at unitarity and for positive a<<λ we find agreement with three-body theory. However, for a<0 and away from unitarity, we observe significant four-body decay. At unitarity, the three-body loss coefficient, L(3) proportional λ(4), is 3 times lower than the universal theoretical upper bound. This reduction is a consequence of species-specific Efimov physics and makes (39)K particularly promising for studies of many-body physics in a unitary Bose gas.
Related Papers
- → Emergent nonlinear phenomena in Bose-Einstein condensates : theory and experiment(2008)325 cited
- → A factor-analytic examination of the unitary or concept(1979)38 cited
- → Critical behavior of a relativistic Bose gas(2014)5 cited
- On the use of standard temperature techniques in the theory of a degenerate Bose gas: Calculating the average in the approximation of a noninteracting Bose gas(1995)
- → Federal Law On State And Municipal Unitary Enterprises (14 November 2002)(2003)