Time-dependent perturbation theory question not a hard one

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SUMMARY

The discussion centers on the application of time-dependent perturbation theory to a hydrogen atom subjected to a time-varying electric field E(t) = Enaught*exp(-a*t). The primary inquiry is about the transition probability from the ground state to the 2p state as time approaches infinity. Participants clarify that the 2p state refers to the quantum state |2 1 0>, emphasizing that electric dipole transitions require a change in the orbital angular momentum quantum number (l) by one unit.

PREREQUISITES
  • Understanding of quantum mechanics, specifically hydrogen atom states
  • Familiarity with time-dependent perturbation theory
  • Knowledge of electric dipole transitions and selection rules
  • Basic concepts of quantum state notation (|n l m>)
NEXT STEPS
  • Study the principles of time-dependent perturbation theory in quantum mechanics
  • Learn about electric dipole transition rules and their implications
  • Explore the quantum state notation and its significance in atomic transitions
  • Investigate the behavior of hydrogen atom states under external electric fields
USEFUL FOR

Students and researchers in quantum mechanics, particularly those focusing on atomic physics and perturbation theory, will benefit from this discussion.

bojibridge
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Homework Statement



A hydrogen atom is placed in a uniform electric field E(t) given by E(t) = Enaught*exp(-a*t) (where a is a constant) for t >0.

The atom is initially in the ground state. What is the probability that, as
t→∞ , the atom makes a transition to the 2p state?

I know how to do this problem in general, but I'm just curious if by 2p state it means |2 0 0> or |2 1 0>...I want to go with the former, but is that what others would do? Or is it even going to matter?

Thanks so much!
 
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2s would mean n=2, l=0; 2p means n=2, l=1. If I recall correctly, the electric dipole transition ends up requiring l to change by 1.
 
Ah, yes, of course! Thank you! I'd lose my head if it wasn't attached...
 

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