Read More
Date: 28-3-2021
2295
Date: 22-5-2016
1305
Date: 9-5-2017
1527
|
THE DIRAC PICTURE
Now consider a Hamiltonian H = H0 + V , where the perturbation V may depend explicitly on time. We write the Schr¨odinger picture time evolution operator as
Rewrite the Schr¨odinger equation as an equation for W
VI (t) is the operator V , with each Schr¨odinger picture operator replaced by the corresponding Heisenberg picture operator evolved with the Hamiltonian H0. VI (t) is called the interaction picture version of the perturbation V and is time dependent even if the original perturbation is time independent. The results of the previous section tell us that
|
|
تفوقت في الاختبار على الجميع.. فاكهة "خارقة" في عالم التغذية
|
|
|
|
|
أمين عام أوبك: النفط الخام والغاز الطبيعي "هبة من الله"
|
|
|
|
|
قسم شؤون المعارف ينظم دورة عن آليات عمل الفهارس الفنية للموسوعات والكتب لملاكاته
|
|
|