How particular is the physics of the Free Energy Principle?

[Music] hello and welcome everyone to the actin flab guest stream number 7.1.07.1 actually very nice number it's may 28 2021 and we have some very special guests on today who i will let themselves uh introduce themselves and then we'll go into a presentation followed by a discussion so any and all questions and comments just put into the live chat during the presentation and i'll be compiling those so that we can make sure to ask them so please miguel go for it okay hi yeah i'm miguel aguilera i'm working as a postdoc since a year now at the university university of sussex and then so my name is christopher buckley i'm a lecturer at the university of sussex in both the sussex neuroscience and sussex ai groups uh interested in sensory motor control in general cool so miguel um share your screen i'll resize it and then we'll have a presentation take as long as you'd like okay okay thanks a lot for the yeah for the invitation i'm really happy to present our work here and it's been really kind of fast because we just released the prayer print a few days ago but it's and it's good for the opportunity to do this discussion online so far uh okay let's see okay can you see my screen yep so and i'll resize it now so go for it okay okay so okay so this is this work uh so this is a problem that we have just published as miguel aguilera and and i we wrote it i wrote it with uh alexander alexander sons and christopher buckley uh from all from sussex but what's except for brenda's now in oslo um so the um so that they work just to focus on some of the recent publications about the free energy principle i guess most people watching know that the pre-inner principle is was conceived originally as a unified brain theory integrating experimental data and trying to listen to describe the relationship between action perception learning and so on and more recently the theory has evolved and and tried to become more general stating that any non-equilibrium dynamical system under some special conditions can be interpreted as performing by using inference and this will be a broader theory of living system or a way to describe how certain living systems behave using the tools from magician inference and and okay so so this is kind of so in principle this this kind of schema of how a brain is predicting an environment could be using different systems like a cell or different human beings and what i i imagine anyone familiar with with the primary principle have seen this kind of pictures a lot and we're trying to to to do different ones and yeah so i think it's a maybe a good thing to to to try to visualize things in a new ways because these ones have been repeated done so many times um okay so so the idea is so we are interested in in exploring this the the different assumptions behind the principle because um in in theory the free energy principle applies to a very diverse systems but in practice there has been very few attempts to explore it to explore all the steps in the of the theory in specific systems and what we want to do here is just that and we want to understand the free energy principle and its mathematical assumptions in the simplest system in the simplest non-equilibrium system that we can find and this is a linear language dynamics that i will explain later and under an assumption of and the assumptions that the couplings between elements are weak and in this very special case we can compute all the relevant variables analytically and this will be a very again this is a very interesting case for studying in in-depth all the mathematical details um okay so the the work i'm presenting today has is related to the latest publications around the ideas of the fib the monograph of free energy for a particular physics and the most recent more recent paper uh by thomas lance and carl about markov blankets information geometry and stochastic thermodynamics and specifically we want to focus on on two questions the third question is is how general…