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Date: 13-5-2017
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Date: 28-3-2021
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Date: 27-3-2021
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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
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للعاملين في الليل.. حيلة صحية تجنبكم خطر هذا النوع من العمل
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"ناسا" تحتفي برائد الفضاء السوفياتي يوري غاغارين
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مهرجان تعزيز الذاكرة الأول يشهد افتتاح معرض خاص بجرائم الإبادة الجماعية
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