On the possibility of the transformation of a soliton into the bound state of two excitons due to the exciton-photon interaction

This paper is concerned with the study of the probability of the soliton transformation, in the molecular chain, into the bound state of two excitons through the exciton-photon interaction.

It is established that this interaction, in general, is weak. In special cases, if the value of dynamical interaction becomes close to double the value of the resonant interaction between neighbouring molecules, the probability of the soliton transformation can be significant.     

The four-pion final state in pp annihilations at 5.7 GeV/c

577 events from $\text{p}\text{p}\text{→2π}{}^{\mathrm{+}}\text{2π}{}^{\mathrm{?}}$ annihilations at 5.7 GeV/c are analyzed. Single-particle spectra are studied and an effective matrix element in the form Π_i=1⁴ exp(?Bp_Ti²) is determined. The rates for production of ?° and f⁰ mesons are estimated and the influence of resonances on the angular distributions of pions and dipions is investigated. Transverse momenta correlations can be explained using peripheral phase space.     

The effect of LH wave on the peripheral plasma of TM-1-MH tokamak

The work is devoted to the study of the LH wave effect on the peripheral plasma of the TM-1-MH tokamak. The observed enhancement of the ion saturated current in the limiter shadow is interpreted as heating of the peripheral ions by absorption of decay waves generated in this region due to the nonlinear wave-plasma interaction.     

Spurious center-of-mass effect in the local density approximation

An additional spurious center-of-mass effect is caused by using the local density approximation for the density dependent effective interactions. The approximate correction term is suggested and its contribution for the light even-even nuclei is calculated. This contribution is found to be of about +9 MeV and its slight tendency to increase the size and to decrease the deformation of the nucleus is noted.     

Application of the Hartree-Fock method in nuclear theory

A review of the Hartree-Fock (HF) self-consistent method is presented as used in nuclear theory. After deriving the fundamental HF equations the two-particle potentials for HF calculations are shown and the particular HF methods described. Furthermore the results of some papers on HF methods are reproduced and discussed.     

Berechnung des Potentials und elektrischen Feldes einer diskreten elektrischen Doppelschicht nach der Ewaldschen Methode

Ohne Zusammenfassung     

Exploratory study of insurance companies in selected post-transition countries: non-hierarchical cluster analysis

Central European Journal of Operations Research - This paper focuses on the analysis of business practice of insurance companies in selected post-transition European countries. Specifically, it...