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     

Landau Free Energy Expansion for Chiral Ferroelectric Smectic Liquid Crystals

The biquadratic coupling between the tilt and polarization is added to the usual bilinear coupling in the Landau free energy density expansion describing the SmA - SmC* transition. The effect on the temperature dependence of the tilt, spontaneous polarization and the pitch of the helix is studied. The results agree qualitatively with measured data.     

On the dimension of the attractor for a perturbed 3d Ladyzhenskaya model

We consider the so-called Ladyzhenskaya model of incompressible fluid, with an additional artificial smoothing term ?Δ³. We establish the global existence, uniqueness, and regularity of solutions. Finally, we show that there exists an exponential attractor, whose dimension we estimate in terms of the relevant physical quantities, independently of ? > 0.