The phenomenon of spiral pair synchronization by oscillating strips (Nozaki-Bekki solution) in a 2D CGLE is investigated analytically. The equations describing the interaction of the strips with one another and with spirals are derived. Analysis of the equations shows that under certain conditions the strips lead to frequency and phase locking of the spirals. In this case the spiral pair (dipol...

Recently, X-ray crystallographic evidence of quinoidal charge delocalization in poly-p-phenylene cation radicals was reported [Banerjee, M. et al., J. Am. Chem. Soc. 2007, 129, 8070]. In this paper, direct visual evidence for quinoidal charge delocalization in quaterphylene (QP) is shown with three-dimensional (3D) charge difference densities. It was revealed that the extra positive charge main...

We studied spin excitations in the magnetically ordered phase of the noncentrosymmetric Ba(2)CoGe(2)O(7) in high magnetic fields up to 33 T. In the electron spin resonance and far infrared absorption spectra we found several spin excitations beyond the two conventional magnon modes expected for such a two-sublattice antiferromagnet. We show that a multiboson spin-wave theory describes these unc...

It is observed that low-lying transitions of an interstitial hydrogen adatom on a metallic lattice correspond classically to dipoles oscillating at frequencies where band electrons typically have a low electromagnetic absorption. Such transitions hence give rise to an essentially unscreened time-dependent perturbation of the lattice potential experienced by neighbouring hydrogen states. It is s...

Numerical simulations of the geodynamo in the presence of heterogeneous heating are presented. We study the dynamics and the structure of the magnetic field when the equatorial symmetry of the flow is broken. If the symmetry breaking is sufficiently strong, the m=0 axial dipolar field is replaced by a hemispherical magnetic field, dominated by an oscillating m=1 magnetic field. Moreover, for mo...

Recent experiments have shown that floating ferromagnetic beads, under the influence of an oscillating background magnetic field, can move along a liquid-air interface in a sustained periodic locomotion [Lumay et al., Soft Matter, 2013, 9, 2420]. Dynamic activity arises from a periodically induced dipole-dipole repulsion between the beads acting in concert with capillary attraction. We investig...

We study to what extent dielectric nanoparticles prefer to self-assemble into linear chains or into more compact structures. To calculate the Van der Waals (VdW) attraction between the clusters we use the Coupled Dipole Method (CDM), which treats each atom in the nanoparticle as an inducible oscillating point dipole. The VdW attraction then results from the full many-body interactions between t...

The Higgs effective potential with temperature corrections is considered and different cases of scalar field symmetry state are discussed within gauge theories of gravity. It is shown that nonsingular oscillating solutions of cosmological equations exist for this model. PACS: 04.50, 98.80Cq

Nuclear Magnetic Resonance serves as an important technique in many fields, including medicine (where it is known as MRI), chemical spectroscopy, and even quantum computation research. At its most basic, NMR is about the coherent manipulation and observation of nuclear dipole moments. Our work here deals exclusively with the hydrogen nucleus, which, being merely one proton, is both the simplest...