Effective actions and bubble nucleation from holography

We discuss the computation of quantum effective action strongly interacting field theories using holographic duality and its use to determine quasiequilibrium parameters first-order phase transitions relevant for gravitational wave production. A particularly simple model is introduced, containing only metric a free massive scalar field. Despite simplicity, contains rich diagram, including at nonzero temperature, due various multitrace deformations. obtain leading terms in from homogeneous black brane solutions gravity dual linearized perturbations around them. then employ construct bubble domain wall theory side study their properties. In particular, we show how scaling with number degrees freedom determines corresponding parameters.