- #1

Terry M

- 4

- 2

I'm also slugging my way through very basic quantum field theory, and see Fourier transforms being used to go back and forth between first and second quantization. Within a box, and using the boundary conditions given by this box, the Fourier summation doesn't pose a problem. But without a box, it seems that the boundary conditions could require the entire universe. Again, an instantaneous pilot wave seems to address this.