Interaction of the single-particle and collective degrees of freedom in non-magic nuclei: the role of phonon tadpole terms

A method of a consistent consideration of the phonon contributions to mass and gap operators in non-magic nuclei is developed in the so-called g^2 approximation, where g is the low-lying phonon creation amplitude. It includes simultaneous accounting for both the usual non-local terms and the phonon tadpole ones. The relations which allow the tadpoles to be calculated without any new parameters are derived. As an application of the results, the role of the phonon tadpoles in the single-particle strength distribution and in the single-particle energies and gap values has been considered. Relation to the problem of the surface nature of pairing is discussed.Comment: 22 pages, 7 figure

Have Superheavy Elements been Produced in Nature?

We discuss the possibility whether superheavy elements can be produced in Nature by the astrophysical rapid neutron capture process. To this end we have performed fully dynamical network r-process calculations assuming an environment with neutron-to-seed ratio large enough to produce superheavy nuclei. Our calculations include two sets of nuclear masses and fission barriers and include all possible fission channels and the associated fission yield distributions. Our calculations produce superheavy nuclei with A ~ 300 that however decay on timescales of days.Comment: 12 pages, 11 figure

Astronomical Distance Determination in the Space Age: Secondary Distance Indicators

The formal division of the distance indicators into primary and secondary leads to difficulties in description of methods which can actually be used in two ways: with, and without the support of the other methods for scaling. Thus instead of concentrating on the scaling requirement we concentrate on all methods of distance determination to extragalactic sources which are designated, at least formally, to use for individual sources. Among those, the Supernovae Ia is clearly the leader due to its enormous success in determination of the expansion rate of the Universe. However, new methods are rapidly developing, and there is also a progress in more traditional methods. We give a general overview of the methods but we mostly concentrate on the most recent developments in each field, and future expectations. © 2018, The Author(s)

Reproduction Of Student Everyday Culture Values

Everyday life culture, reproducing a certain values system, creates conditions for individual's self-identification and is the basis of its spiritual development. Therefore, the importance of everyday culture deep structures and values studying and their impact on the modern student personality development under the social and humanitarian knowledge theory and practice are justified as a priority area of research. The paper reveals the everyday culture essence and semantic content, determined by the changes' rapidity and its values polymorphism in the interdisciplinary context of the learning process; values are established - the dominants of students' everyday life culture, reproduced in the university educational process; based on the study results, the structure and content of the frame approach in the educational process interdisciplinary context, oriented on the reproduction of student every day culture values is justified and its practical importance is proved

Reproduction Of Student Everyday Culture Values

Everyday life culture, reproducing a certain values system, creates conditions for individual's self-identification and is the basis of its spiritual development. Therefore, the importance of everyday culture deep structures and values studying and their impact on the modern student personality development under the social and humanitarian knowledge theory and practice are justified as a priority area of research. The paper reveals the everyday culture essence and semantic content, determined by the changes' rapidity and its values polymorphism in the interdisciplinary context of the learning process; values are established - the dominants of students' everyday life culture, reproduced in the university educational process; based on the study results, the structure and content of the frame approach in the educational process interdisciplinary context, oriented on the reproduction of student every day culture values is justified and its practical importance is proved