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January 29th, 2011, 07:20 AM  #1 
Newbie Joined: Oct 2010 Posts: 2 Thanks: 0  Quantum wave packet propagation, how to use it in FFT?
So I used the split step method on the Schrodinger equation and have produced the following equation: Which when scaled to dimensionless the time evolution step can be written as: F above represents the Fourier transform operator acting on the equations. Now my problem is that I don't know how to implement the above in Fast Fourier Transform. For example: If I were to take the exponential factor with V(x), do I multiply iV(x) by dt? Not sure I understand what is going on here.... Thanks 

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fft, packet, propagation, quantum, wave 
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