We find chiral non-Abelian semi-superfluid vortices in the color-flavor locked (CFL) phase of dense QCD as the minimum vortices carrying half color magnetic fluxes of those of non-Abelian semi-superfluid vortices (color magnetic flux tubes) and 1/6 quantized superfluid circulations of Abelian superfluid vortices. These vortices exhibit unique features: one is the so-called topological obstruction implying that unbroken symmetry generators in the bulk are not defined globally around the vortices, and the other is color non-singlet Aharonov-Bohm (AB) phases implying that quarks encircling these vortices can detect the colors of magnetic fluxes of them at infinite distances. They are confined by chiral domain walls in the presence of the mass and axial anomaly terms explicitly breaking axial and chiral symmetries while they are deconfined in the absence of those terms. In the confined phase, two chiral non-Abelian semi-superfluid vortices with chiralities opposite to each other are connected by a chiral domain wall, consisting a mesonic bound state exhibiting only color singlet AB phases so that the quarks cannot detect the color of magnetic flux of such a bound state at infinite distances, and the final state of the mesonic bound state is nothing but a non-Abelian semi-superfluid vortex. We also show that Abelian and non-Abelian axial vortices attached by chiral domain walls are all unstable to decay into a set of chiral non-Abelian vortices.
تحميل البحث