- #1
gispiamp
- 6
- 0
This Prob is from Shankar, 17.2.3
"we assumed that the proton is a point charge e. If the proton is a uniformly dense charge distribution of radius R, the interaction is modified as
V(r)= -2(e)^2/(2R) + (er)^2/(2(R)^3) r<R
= -e^2/r r>R
Calculate 1st Order shift in the ground-state energy of H, due to this modification
Assume Exp[-R/a0]~1. (Correct answer is E(1)=2(eR)^2/(5(a0)^3))"
I try ro make perturbated Hamiltonian term to use |nlm>
H=T+V=T-e^2/r+e^2/r+V=H0+H`
H` is V+e^2/r (this H` gives zero when r>R)
and calculate 1st order purtubation. but it doesn't give correct answer
I think the method I used is something wrong.(because calculation has no error)
Please show me the way~
"we assumed that the proton is a point charge e. If the proton is a uniformly dense charge distribution of radius R, the interaction is modified as
V(r)= -2(e)^2/(2R) + (er)^2/(2(R)^3) r<R
= -e^2/r r>R
Calculate 1st Order shift in the ground-state energy of H, due to this modification
Assume Exp[-R/a0]~1. (Correct answer is E(1)=2(eR)^2/(5(a0)^3))"
I try ro make perturbated Hamiltonian term to use |nlm>
H=T+V=T-e^2/r+e^2/r+V=H0+H`
H` is V+e^2/r (this H` gives zero when r>R)
and calculate 1st order purtubation. but it doesn't give correct answer
I think the method I used is something wrong.(because calculation has no error)
Please show me the way~