Exercise 9.4.3. Ignore the fact that the hydrogen atom is a three-dimensional system and pretend that e? H= 2m (R?)/2 (P² = P? + P; + P? , R² = X² + Y² +Z³) corresponds to a one-dimensional problem. Assuming ΔΡ- ΔR> h/2 estimate the ground-state energy.
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