We study, via multiscale analysis, a defect-of-compactness phenomenon which occurs
in bosonic and fermionic quantum mean-field problems. The approach relies on a
combination of mean-field asymptotics and second microlocalized semiclassical
measures. The phase space geometric description is illustrated by various
examples.
Keywords
semiclassical measures, multiscale measures, reduced
density matrices, second quantization, microlocal analysis