In 1991 , by extending his theory concerning this force to chiral superfluids , he predicted the existence of fermionic bound states , quasiparticles now known as Majorana fermions .
That existence may be possible to observe in topological superfluids and superconductors .
In 1991 , by extending his theory concerning this force to chiral superfluids , he predicted the existence of fermionic bound states , quasiparticles now known as Majorana fermions and that it may be possible to observe in topological superfluids and superconductors .