Methods elaborated in quantum mechanics for the Landau–Zener problem are generalized
to study the non-adiabatic transitions in a wide class of problems of wave propagation, in …

Asymptotic expansion for normal modes in an elastic layer resting on the Winkler foundation
is constructed. Parameters of the layer slowly and smoothly vary in the lateral direction …

Теоретически и экспериментально исследованы эффекты рефракции
необыкновенного луча в геликоидальных системах с большим по сравнению с длиной …

The phenomenon of extraordinary ray refraction in a helical liquid crystal with large
(compared to the light wavelength) pitch has been studied by theoretical and experimental …

We consider the problem of light scattering in a slab of cholesteric liquid crystal with the pitch
which significantly exceeds the wavelength of light. The electromagnetic wave propagation …

The problems of light propagation and scattering in twisted nematic and cholesteric liquid
crystals are considered. We study the correlation function of the director fluctuations, the …

Статья посвящена изучению влияния внешнего электрического поля на ячейку ХЖК при
двойной закрутке директора (изменении азимутального угла системы на 2π), а также …

An asymptotic approach for a Schroedinger type equation with non selfadjoint Hamiltonian
of a special type in the case of two close degeneracy (turning) points is developed. Both real …