Various types of topological defects in graphene are considered in the framework of the
continuum model for long-wavelength electronic excitations, which is based on the Dirac …

We investigate the vacuum expectation value of the fermionic current induced by a magnetic
flux in a (2+ 1)-dimensional conical spacetime in the presence of a circular boundary. On the …

The fermionic condensate is investigated in a (2+ 1)-dimensional conical spacetime in the
presence of a circular boundary and a magnetic flux. It is assumed that on the boundary the …

The vacuum expectation value (VEV) of the energy-momentum tensor for a massive
fermionic field is investigated in a (2+ 1)-dimensional conical spacetime in the presence of a …

The relativistic spin-0 matter field is quantized in the background of a straight cosmic string
with nonvanishing transverse size. The most general boundary condition ensuring the …

A massless spinor field is quantized in the background of a singular static magnetic vortex in
2+ 1-dimensional space-time. The method of self-adjoint extensions is employed to define …

We show that the vacuum of the quantized massless spinor field in (2+ 1)-dimensional
space-time is polarized in the presence of a singular magnetic vortex. Depending on the …

In a space of arbitrary dimensions, the effect of an external magnetic field on the vacuum of a
quantized charged scalar field is studied for the field configuration in the form of a singular …

On the basis of the continuum model for long-wavelength charge carriers, originating in the
tight-binding approximation for the nearest-neighbour interaction of atoms in the crystalline …

We considered the vacuum polarization of a quantized charged scalar matter field in the
background of a finite-thickness tube with magnetic flux inside. The tube is impenetrable for …