Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, Austria.
Phys Rev Lett. 2010 Aug 13;105(7):073202. doi: 10.1103/PhysRevLett.105.073202.
Analytic expressions describe universal elastic and reactive rates of quasi-two-dimensional and quasi-one-dimensional collisions of highly reactive ultracold molecules interacting by a van der Waals potential. Exact and approximate calculations for the example species KRb show that stability and evaporative cooling can be realized for spin-polarized fermions at moderate dipole and trapping strength, whereas bosons or unlike fermions require significantly higher dipole or trapping strengths.
解析表达式描述了由范德瓦尔斯势相互作用的高反应性超冷分子的拟二维和拟一维碰撞的通用弹性和反应速率。对于 KRb 这种示例分子的精确和近似计算表明，在中等偶极矩和囚禁强度下，可以实现极化费米子的稳定性和蒸发冷却，而玻色子或不同的费米子则需要显著更高的偶极矩或囚禁强度。
