During recent years the interest to dynamics of quantum systems has grown considerably.
Quantum many body systems out of equilibrium often manifest behavior, different from the …

During recent years the interest to frustrated magnets has grown considerably. Such
systems reveal very peculiar properties which distinguish them from standard paramagnets …

We predict the instability of the quantum spin-1 chain material with respect to the spin
nematic ordering. For the spin subsystem the spin nematic order parameter is related to the …

The infinite Heisenberg XXZ spin-1 2 chain in the gapped antiferromagnetic regime has two
degenerate vacua and kink topological excitations (which are also called spinons) …

Spin-1 chain material is considered. Recently, it was predicted that the spin nematic ordered
phase can be realized due to the spin-elastic coupling. In this study we show that the …

Electric, piezoelectric, and elastic characteristics of the orthorhombic quantum paramagnet
are calculated. Using the exact analytical solution it was shown that the electric permittivity …

Two simple effective models for the low-temperature (however higher than the temperature
of the transition to the superconducting phase) behavior of magnetic and magnetocaloric …

Abstract The Heisenberg XXZ spin-(1/2) chain is considered in the massive
antiferromagnetic regime in the presence of a staggered longitudinal magnetic field. The …

The effect of the coupling between the spin (magnetic), electric, and elastic subsystems of
the biaxial paramagnetic crystal has been studied. Relative changes of the electric …

We consider the quantum paramagnet with the coupling between spin and electric degrees
of freedom. The dynamical electric characteristics of the system under the action of the ac …