correlated system and the dynamic domain field theory maps it into non-markovian so dynamics with memory but of one single degree of freedom so this is where we lose the high dimension and get a system that we can actually plug into computer and analyze and here uh rd you know is that one dimensional system but this is a little you know i want to get to the results or conclude so i will not be explaining this in detail but again i was mentioning this lecture by pierre francesco obani in lesos where he actually derives this equation