 Gross–Pitaevskii equation

The Gross–Pitaevskii equation (GPE) is a nonlinear partial differential equation that describes the evolution of a complex wave function associated with a Bose-Einstein condensate (BEC), a state of matter formed at very low temperatures where a group of bosons occupy the same quantum state. The equation is named after physicists Eugene Pitaevskii and Lev Gross, who contributed to its formulation.