Domain collisions

We use holography to study collisions of phase domains formed in a four-dimensional, strongly-coupled gauge theory with first-order, thermal transition. find three qualitatively different dynamical regimes depending on the collision velocity. For low velocities slow down before and subsequently merge relax equilibrium. intermediate no is present merger. high enough can collide break apart several times they finally merge. These features leave an imprint time evolution entropy system, which we compute from area dual horizon gravity side.