Question

explain excitonium????

Answer 1

excitonium is a condensate it exhibits microscopic quantum phenomena like superfluid or superconductor it's made up of excitons

Answer 2

hello friend :))

it's a form of condensate...it shows  macroscopic quanton pheno.
..which is a super fluid or insulating. crystals.

Its made up of excitonium. :)

thanks :))