The only requirement for an ensemble of particles to undergo a transition into a BEC is to be bosons.
But two fermions also make a bosons.
Are there physical, measureable implications of a BEC being made of fermionic particles? E.g. neutral atoms still being made of fermionic constituents?
Like, maybe there has to be a minimum size?
Could I tell a BEC of photons, of gravitons, of gluons, or of Higgs bosons, apart from one of bosonic atoms?