Energy eigenvalues and ground-state energy

In summary, the energy eigenvalues of a particle in a 3-d cube of side a are given by the formula E_{nx,ny,nz}=\frac{a(n^{2}_{x}+n^{2}_{y}+n^{2}_{z})}{b}+ Vo, where a=planks constant^2(pi)^2, b=2m^2, and nx,ny,nz are any positive integers. The ground-state kinetic energy is 3a(n^{2}_{x}) /b and the potential energy can be found by rearranging the equation to have Vo = E - 3a(n^{x}_{2} )/b.
  • #1
Jenkz
59
0

Homework Statement


The energy eigenvalues of a particles of mass, m, confined to a 3-d cube of side a are:

E[tex]_{nx,ny,nz}[/tex]=[tex]\frac{a(n^{2}_{x}+n^{2}_{y}+n^{2}_{z})}{b}[/tex]+ Vo

where:
a= planks constant^2(pi)^2
b=2m^2
nx,ny,nz = any positive integers.

What are the ground-state kinetic and potential energies of the particle.

The Attempt at a Solution


Really stumped. Any hints would be helpful thanks.
 
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  • #2
Try starting with the kinetic and potential energy operators.
 
  • #3
So
Ke = 3a(n[tex]^{2}_{x}[/tex]) /b ?

And Pe would be re-arranging to have Vo = E - 3a(n[tex]^{x}_{2}[/tex] )/b
 

FAQ: Energy eigenvalues and ground-state energy

1. What are energy eigenvalues?

Energy eigenvalues represent the allowed energy states of a quantum system. They are the quantized values that an electron or other particle can have within a particular system.

2. How are energy eigenvalues determined?

Energy eigenvalues are determined through solving the Schrodinger equation, which is a mathematical equation that describes the behavior and properties of quantum systems. This equation yields a set of possible energy eigenvalues for a given system.

3. What is the significance of the ground-state energy?

The ground-state energy is the lowest possible energy state that an electron or other particle can have within a given system. It is significant because it represents the most stable and lowest energy state of the system, and all other energy states are defined relative to this ground-state energy.

4. How is the ground-state energy related to the energy eigenvalues?

The ground-state energy is the lowest energy eigenvalue for a given system. It is the energy eigenvalue associated with the lowest energy state that an electron or other particle can occupy within that system. All other energy eigenvalues are higher in energy than the ground-state energy.

5. Can energy eigenvalues change?

Energy eigenvalues are fixed and do not change unless there is a change in the system itself. They are determined by the specific characteristics of the system, such as its shape, size, and potential energy. However, the probability of an electron or other particle occupying a particular energy eigenvalue can change depending on external factors.

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