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Im trying to solve the equation:

i*dV/dt = d^2V/dz^2 + V*sqrt(1-V^2)

I want to try by the split step fourier method.

My problem is that most of the code/solvers I saw that implement the SSFM method are when the evolution is in space not in time, meaning the first derivative is d/dz and the second is (d/dt)^2

any idea how it fact or maybe it doesnt matter ?

furthermore, you think it is possible to solve itusing the matlab solver for PDE ?

thanks in advance

John.

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# Urgent - important question regarding SSFM

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