Time dependent Perturbation Theory, Fermi's Golden rule, Einstein's A and B coefficients

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  1. NPTEL IIT Guwahati
  2. Time dependent
  3. Perturbation theory
  4. Fermi’s Golden rule
  5. Einstein coefficients
  6. A and b coefficients
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Комментарии
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Em is greater than Ek, then isn't it absorption?? (Because Em is the state after perturbation and Ek is the state before perturbation)

atyantkumarhota
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Professor shenoy kha h
Inhe to padhana bhi ni aata

chahattiwari
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If I build C2(t) mod squared in 55:50 in the equation for absorption I end up with a nice oscillating cos(t0(w21-w)) but cannot get rid of a Joule term squared because of h cross!
Can anybody help me, please? Thanks in advance! (The same unity problem would arise in emission..)

ruedigersens
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WHAT A SHAME THAT USING POTENTIALS TO DESCRIBE INTERACTIONS IS PRETTY OLD-FASHIONED.
THE STANDARD MODEL TELLS YOU THERE ARE GAUGE BOSONS MEDIATING THESE INTERACTIONS.

TheBigBangggggg
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Sir etana lmba video koi dekhata nai hai😂

mihirvaghela