1. Solve the Schrodinger equation for a particle of mass, m, in a box. The box is modeled as an infinite potential well that is V, inside the region from 0 < x < L and there is an infinite amount of potential energy outside this region. Remark: The only difference between this problem and the one we worked out in a previous lecture is that now the constant potential energy inside the box can be any value, whereas, in the previous lecture, we considered the special case that V, = 0.

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1. Solve the Schrodinger equation for a particle of mass, m, in a box. The box is modeled as an infinite
potential well that is V, inside the region from 0 < x < L and there is an infinite amount of potential
energy outside this region. Remark: The only difference between this problem and the one we worked
out in a previous lecture is that now the constant potential energy inside the box can be any value,
whereas, in the previous lecture, we considered the special case that V, = 0.
2abc. Compare the solutions you found in (1) for general V, with those for the case that V, = 0.
(a) Does your answer check for that special case?
(b) How does the energy levels change?
(c) What parts of the solution stay the same and what parts change?
3. In view of the parts that stay the same and the parts that change from question (2), are the results
consistent with classical physics (yes or no). Note that in classical physics there is no absolute reference
potential energy, because all that affects the dynamics of a particle is the change in potential energy
(i.e. forces). As you know, in Newtonian physics it is always possible to add a constant potential energy
to the system, and the same dynamics will be observed. How does changing the potential energy
reference change the dynamics of the particle within the theory of quantum mechanics? Explain based
on your calculations from (1) and observations in (2).
Transcribed Image Text:1. Solve the Schrodinger equation for a particle of mass, m, in a box. The box is modeled as an infinite potential well that is V, inside the region from 0 < x < L and there is an infinite amount of potential energy outside this region. Remark: The only difference between this problem and the one we worked out in a previous lecture is that now the constant potential energy inside the box can be any value, whereas, in the previous lecture, we considered the special case that V, = 0. 2abc. Compare the solutions you found in (1) for general V, with those for the case that V, = 0. (a) Does your answer check for that special case? (b) How does the energy levels change? (c) What parts of the solution stay the same and what parts change? 3. In view of the parts that stay the same and the parts that change from question (2), are the results consistent with classical physics (yes or no). Note that in classical physics there is no absolute reference potential energy, because all that affects the dynamics of a particle is the change in potential energy (i.e. forces). As you know, in Newtonian physics it is always possible to add a constant potential energy to the system, and the same dynamics will be observed. How does changing the potential energy reference change the dynamics of the particle within the theory of quantum mechanics? Explain based on your calculations from (1) and observations in (2).
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