Read More
Date: 9-3-2016
1603
Date: 9-5-2017
1637
Date: 9-3-2016
1493
|
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
|
|
دراسة يابانية لتقليل مخاطر أمراض المواليد منخفضي الوزن
|
|
|
|
|
اكتشاف أكبر مرجان في العالم قبالة سواحل جزر سليمان
|
|
|
|
|
المجمع العلمي ينظّم ندوة حوارية حول مفهوم العولمة الرقمية في بابل
|
|
|