Intrinsically gapless topological phases

Gapless phases of color-superconducting matter

We discuss gapless color superconductivity for neutral quark matter in β equilibrium at zero as well as at nonzero temperature. Basic properties of gapless superconductors are reviewed. The current progress and the remaining problems in the understanding of the phase diagram of strange quark matter are discussed. PACS numbers: 12.38.-t, 12.38.Aw, 12.38.Mh, 26.60.+c Submitted to: J. Phys. G: Nuc...

Gapless color superconducting phases of dense quark matter

Sufficiently cold and dense baryonic matter is expected to be a color superconductor. The corresponding ground state is characterized by a condensate of Cooper pairs made of quarks. Since the latter carry color charges, the SU(3)c color gauge group of strong interactions is partially or completely broken through the Anderson-Higgs mechanism. At asymptotic densities, this phenomenon was studied ...

Entanglement in Topological Phases

In this report, the research conducted on entanglement in topological phases is detailed and summarized. This includes background developed and an explanation of the structure of the code written it MATLAB to compute various aspects of entanglement for topological systems. Topological phases are generally those that cannot be described by Landau symmetry-breaking, including the fractional quant...

Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase

Phase transitions between the quantum spin Hall and the insulator phases in three dimensions are studied. We find that in inversion-asymmetric systems there appears a gapless phase between the quantum spin Hall and insulator phases in three dimensions, which is in contrast with the two-dimensional case. Existence of this gapless phase stems from a topological nature of gapless points (diabolica...

Gapped and gapless phases of frustration-free spin-2 chains