Recent content by Fisherman87
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Quantum Mechanics: Delta Potential Sudden Change
Asked professor today and he forgot to mention in the assignment prompt that the problem was only for bound states of ψβ.- Fisherman87
- Post #7
- Forum: Advanced Physics Homework Help
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Quantum Mechanics: Delta Potential Sudden Change
I was referring to ψβ as the overall superposition of all the possible states. Ergo, the bound state added to the free particle states. Notice that the problem itself doesn't specify exactly what ψβ is; it only tells me what the new potential function is. It's also possible that I'm a bit...- Fisherman87
- Post #6
- Forum: Advanced Physics Homework Help
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Quantum Mechanics: Delta Potential Sudden Change
It's a delta function. There is no width. While it is in a bound state, you are right. However, if the potential suddenly changes to some other value, then there is a chance that it moves off. I am not sure how time is involved. When I tried to include time while treating it as a free particle...- Fisherman87
- Post #3
- Forum: Advanced Physics Homework Help
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Quantum Mechanics: Delta Potential Sudden Change
Homework Statement I have a particle which is initially in a bound state for a given voltage in the form of a delta function at the origin, V = -αδ(x) initial state is ψα = (√αm)/h2*exp(-m*α*|x|/(h2) At t=0, voltage is changed to V = -βδ(x) both α and β are greater than zero. Right now I'm...- Fisherman87
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- Change Delta Mechanics Potential Quantum Quantum mechanics
- Replies: 7
- Forum: Advanced Physics Homework Help
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Bessel's Differential equation
I guess I should've been more descriptive. I have all that information already (even though this is for spherical coordinates and not polar). The equation I got for the last term multiplied by R is mu*r^2. This is why I'm having trouble, since it doesn't really agree completely with the normal...- Fisherman87
- Post #3
- Forum: Calculus and Beyond Homework Help
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Bessel's Differential equation
Homework Statement A solid ball at 30 degrees C with radius a=1 is placed in a refrigerator that maintains a constant temperature of 0 degrees C. Take c (speed)=1 and determine the temperature u(r,theta,phi,t) inside the ball Homework Equations partial differential heat equation in...- Fisherman87
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- Differential Differential equation
- Replies: 2
- Forum: Calculus and Beyond Homework Help