The ground state and transport properties of the Lieb lattice flat band in the presence of an
attractive Hubbard interaction are considered. It is shown that the superfluid weight can be …

We study exciton polaritons in a two-dimensional Lieb lattice of micropillars. The energy
spectrum of the system features two flat bands formed from S and P x, y photonic orbitals …

Recently, the concept of topological insulators has been generalized to topological
semimetals, including three-dimensional (3D) Weyl semimetals, 3D Dirac semimetals, and …

Three-dimensional obstructed atomic insulators (OAIs) are characterized by the appearance
of floating surface states (FSSs) at specific surfaces. Benefiting from this feature, our study …

The noninertial effect of rotating frames on the quantum dynamics of scalar bosons
embedded in the background of a cosmic string is considered. In this work, scalar bosons …

The geometric interpretation of (pseudo) spin-1/2 systems on the Bloch sphere has been
appreciated across different areas ranging from condensed matter to quantum information …

As a new type of quantum matter, Dirac node line (DNL) semimetals are currently attracting
widespread interest in condensed matter physics and materials science. The DNL, featured …

In breathing pyrochlores and kagomes, couplings between neighbouring tetrahedra and
triangles are free to differ. Breathing lattices thus offer the possibility to explore a different …

In this paper, a relativistic behavior of spin-zero bosons is studied in a chiral cosmic string
space–time. The Duffin–Kemmer–Petiau (DKP) equation and DKP oscillator are written in …

Recently, new materials exhibiting exotic band structures characterized by Dirac cones,
nontrivial flat bands, and band crossing points have been proposed on the basis of effective …