Holger Bech Nielsen
Urs Schreiber
Holger Frits Bech Nielsen
Introducing Nielsen-Olesen vortex strings inspired from Abrikosov vortices in type II superconductors and thereby laying the ground for the dual superconductor model of color confinement:
On the Cheshire cat principle of the quark bag model:
and derivation from the AdS/QCD correspondence: