Dear MPB/MEEP community:
I've obtained the raw eigenvectors of a simple 2-D photonic crystal calculated by MPB. The data structure has a dimension of b*4*N , b is the number of bands , N is the number of planewaves (grid points), but I don't know the second number 4 means. What does each of the four numbers represent? Is anyone know this? Looking forward to your reply. THANK YOU. -- Jessie
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