Questions tagged [fermis-golden-rule]
131 questions
1
vote
1 answer
Fermi golden rule and decay width
Consider QM perturbation theory. For the hamiltonian $\hat{H} = \hat{H}_{0} + \hat{V}$, the set of eigenstates $\{|n\rangle\}$ of $\hat{H}_{0}$ and assuming time independence of $\hat{V}$, one has that the differential probability $dP_{if}(t)$ of…
Name YYY
- 8,820
0
votes
0 answers
factor 2pi in golden rule
For the Golden Rule cross-section function, there is a factor $2pi$ in every delta function and a factor of $1/2pi$ for every derivative.
Any easy and intuitive way to understand such factors?
liu yang
- 23
- 2