【摘要】 不依赖于特设的极限定义求出了U(t,t_o)算符在t,t_o→±∞时的极限,并对于GelI-Mann和Goldberger的极限定义的性质进行了讨论。 此外,把U(t,t_o)及其极限的形式加以扩充,概括了阻尼理论和散时理论的各种类型的微扰公式。更多还原

【Abstract】 The correct limit of U(t,t0) is obtained without introducing any adiabatic device when the limit t0→±∞ is properly taken. Discussion are given on the properties of the special limiting process proposed by Gell-Mann and Goldberger.In addition, the formal expression of U(t,t0) and its limit is generalized to comprise various forms of perturbation formalism of damping and scattering.更多还原