Quarkionic matter

Quarkionic matter is a new QCD phase at finite temperature and density, which differs from the confinement and deconfinement phases. Its existence is confirmed by consideration of QCD with a large number of colors, and hints of its existence for three-color QCD are given by lattice calculations and experiments with heavy ion collisions. It is expected that the hadronic matterquarkionic matter phase transition will be of the first order. We discuss a holographic model that fits all these expectations. In the perspective of future experiments, we discuss characteristic features of the quarkionic phase transition that can be detected experimentally.