Suppose the perturbation has time dependence: H =Velut for the initial conditions: C. (0) = 1. Ch0)-0 The transition probability is .a (t) 2rw sin (w t), where w=(w -w ab .b Pamole) = Kel cos (m,), where w, = / (w-w)² +(V»/)° 2ho, .c Pa-o(0) = sin (m,t), where w, =V (w-m)²+(Vo/} .d where o, = (w-w)² +(V»/+)² 2ho,
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