Did you know AI Diffusion models were inspired by physics? The diffusion equation (for heat) is a differential equation first attributed all the way back to Joseph Fourier (yes, the same Fourier in Fourier Series/Fourier transforms) in the early 1800s to describe heat flow in thermodynamics.In AI diffusion models, the quantity being “diffused” is not a physical substance, but the probability distribution of the data. During the forward diffusion process, clean data samples, such as images, are g