What quantum mechanical effect supports a white dwarf against further gravitational collapse?

Answer

Electron degeneracy pressure

The immense density of a white dwarf prevents further shrinking under gravity not through heat, but via electron degeneracy pressure, a quantum mechanical effect that is independent of the object's temperature.

What quantum mechanical effect supports a white dwarf against further gravitational collapse?
starsstellar evolutionastrophysicswhite dwarfBlack Dwarf