I have a 1×N Green function in energy domain. I want to use the FFT (fast fourier transform) for this Green function in MATLAB. But this function is non-periodic. Could you help me about this? How can I change the energy interval to convert Green function as a periodic function?(adsbygoogle = window.adsbygoogle || []).push({});

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# FFT for one 1*N Green function in MATLAB

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