Читать книгу Quantum Mechanics, Volume 3 - Claude Cohen-Tannoudji - Страница 91

We have established which conditions the variational wave function must obey to make the energy stationary, but we have yet to study the actual value of this energy. This will allow us to show that the parameter μ is in fact the chemical potential associated with the system of interacting bosons. We shall then introduce the concept of a relaxation (or “healing”) length, and discuss the effect, on the final energy, of the fragmentation of a single condensate into several condensates, associated with distinct individual quantum states.