Glueball spectrum and screening properties across the superfluid transition of two colour QCD
Seminar Room 1, Newton Institute
QCD with two color undergoes a transition to a phase with diquark condensate when the quark chemical potential equals half the pion mass. We investigate the gluonic properties of this transition by inspecting the behaviour of the glueball correlators. It turns out that the glueball masses change very little at the transition, supporting the view that the suprfluid transition is not deconfining, while the amplitude of the propagators drops, suggesting a strong reduction of the gluon condensate.