What is the main difference in the trajectories of drunk people if you ask them to either ramble or run?? In a physical sense a random walker (drunk-rambler) is a particle that undergoes a diffusive translational process which occurs in thermal equilibrium. Instead, if one defines a direction of propulsion and leaves it to diffuse freely the final outcome (drunk-runner) is completely out-of-equilibrium. These models are being used to model from artificial colloidal particles to bacteria and large animals.
In this talk we analyze systems of large amounts of drunk-runners with different kinds of situations. Firstly, we study the effect of the velocity and density of runners in the scenario in which drunk-runners only feel each other if they collide, but keep running. Secondly, we do exactly the same but in a room with hard walls. Finaly, drunk-runner does not care about where to end the night and begin following the multitude (of other drunk-runners, of course!). Oh, Surprise!! A drunk-rockstar, what do you think the drunk-runner multitude would do?