标题： 伽莫夫和费米黄金规则 显示英文标题

标题： The Gamow and the Fermi Golden Rules

摘要： 利用伽莫夫态在动量表象中是平方可积的这一事实，我们得到了两体非相对论衰变的微分和总衰变宽度。 所得的伽莫夫黄金定律非常适合描述能量和角度衰变分布，并且当共振寿命较长且远离能量阈值时，它就变成了费米黄金定律。 我们还表明，正确的态密度和相空间因子自然地从伽莫夫黄金定律中得出。 结果是，伽莫夫态和黄金定律可以结合成量子共振的统一描述。 显示英文摘要

摘要： By using the fact that the Gamow states in the momentum representation are square integrable, we obtain the differential and the total decay width of a two-body, non-relativistic decay. The resulting Gamow Golden Rule is well suited to describe both energy and angular decay distributions, and it becomes the Fermi Golden Rule when the resonance is long-lived and far from the energy threshold. We also show that the correct density of states and phase space factors arise naturally from the Gamow Golden Rule. The upshot is that the Gamow states and the Golden Rule can be combined into a unified description of quantum resonances.