Quantum protocols at presence of non-abelian superselection rules in the framework of algebraic model

In this paper, we study the influence of non-abelian superselection rules on the transfer of quantum information with the help of qubits on the base of an algebraic model and formulate quantum protocols. We pay the main attention to the superselection structure of the algebra of observables OG defined by the Cuntz algebra Od (a field algebra) that contains OG as a pointwise fixed subalgebra with respect to the action of the gauge group G. We prove that it is possible to code information only with the help of states such that projectors on them belong to the algebra of observables and, owing to their commutativity with elements of the representation of the group G, they allow the recipient to restore the obtained informatio

Analysing the concept of “beauty”

The article reveals the origin and expression of the concept of “beauty” as one of the central concepts of “The Collector” by John Fowles. Analyzing this work within the study of cognitive linguistics, authors used the method of linguo-poetic description of the text to embrace the variety of its semantic units and to discover its complexity and multivalence. Considering the number of mentioning and the diversity of lexical units, authors represented the linguistic expression of the aesthetic assessment of the concept of “beauty”. Authors concluded that the value and the significance of the concept of “beauty” are rather high as it gains broad semantic diversity, demonstrates the variety of connotations and presence of assessing component.peer-reviewe

The Solkhat's war and its reflection in the fortification of Caffa

A relationship between two political entities - the Golden Horde and the Commune of caffa in the 6o's-8o's of the 14th century is discussed in this article. The authors examine the emergence of powerfiui fortifications on the Black Sea coast and the transformation of the town landscape which had been influenced by the conflict between these states. The military conflict called the Solkhat's war resulted in the victory of Genoa Republic. The Golden Horde lost its coastal territory of Southern Crimea. A system of towns, villages and fortresses was created in subordination to the town of affa. The lands of the peninsula which belonged to Golden Horde and Byzantine were cut offfrom the harbours and, as a consequence, from receiving large incomes on sea trade. The last one became a monopoly of Genoa

The possibility of using a shallow seismic in detailing the structure of heavy oil reservoirs at the stage of exploration in conditions of the western slope of the South-Tatar arch

The technique of research, especially graph processing and the results of shallow seismic survey on Varvarkinskaya heavy oil reservoir located within the western slope of the South Tatar arch are presented in this article. It is found that the kinematic and dynamic parameters of the reflected waves react to heterogeneity of the structure of productive sandstone member Ufimian time (P2ss). The obtained results allow us to consider shallow seismic as a potential tool for refinement heavy oil drainage boundary and structural features of the reservoirs in the geological conditions of the western slope of the South Tatar arch

Typology of glazed ceramics of the Kazan Khanate and analysis of its element composition

© The authors. Studying on archaeological material the history of the Kazan Kremlin which was included in the list of UNESCO in 2000 is an actual problem because of the limited written sources remained. The aim of the work is to study the features of trade and craft traditions of the late Middle Ages Kazan on the example of ceramic artifacts. The authors applied a complex of analytic methods which included morphology and element composition of glaze: samples of glazed ceramics with green, brown and blue glaze. The chemical composition of glaze of three ceramics samples was determined in the article by two methods. They are the emission spectroscopy and the method of electron microscopy. The good comparability of analytical data of two independent methods is shown in the article. Both advantages and disadvantages of each type of the analysis are given. The data on a chemical composition in the article show that two samples of the glaze is lead, the third sample is lead-tin with an addition of ash (that is sodium and potassium). Results of the article revealed an optimal range of analytical procedures for the studying of glazed ceramics and may be useful as methodical material for archeometric researches

Parity splitting in nuclei involving octupole correlations and the alignment of the angular momentum

A rotational model based on a simultaneous analysis of parity splitting and the alignment of the angular momentum is developed to describe high-spin negative-parity states. A simple formula for the energy of these states is proposed. It is shown that negative-parity states exhibit alignment, provided that the ground-state band is aligned and that the two opposite-parity bands can be considered as a single alternating-parity band. © 2001 MAIK "Nauka/Interperiodica"

Superfluidity of heated Fermi systems in the static fluctuation approximation

© 2015, Pleiades Publishing, Ltd. Superfluidity properties of heated finite Fermi systems are studied in the static fluctuation approximation, which is an original method. This method relies on a single and controlled approximation, which permits taking correctly into account quasiparticle correlations and thereby going beyond the independent-quasiparticle model. A closed self-consistent set of equations for calculating correlation functions at finite temperature is obtained for a finite Fermi system described by the Bardeen–Cooper–Schrieffer Hamiltonian. An equation for the energy gap is found with allowance for fluctuation effects. It is shown that the phase transition to the supefluid state is smeared upon the inclusion of fluctuations

Dynamics of nuclear spins with equal constants of spin-spin interaction

The dynamics of a system of interacting nuclear spins placed in a nanocontainer are considered. An exact solvable model for describing the dynamics of the investigated system is formulated. Relations that express free induction decay and the shape of the NMR line that are valid for low temperatures are found. The possibility of comparing theoretical calculations to the experimental data in order to control nanocavities in materials and to investigate ordered spin structures is discussed. © 2011 Allerton Press, Inc

2D shallow seismic study of terrigenous heavy oil reservoir driven by SAGD at the Ashalchy Oil Field, Tatarstan

The objective of seismic experiments was to estimate possibilities of shallow seismic in control of SAGD recovery process under geological conditions of the South Tatar arch. Bituminous sandstone member Ufimian time (P2ss) is the productive formation of Ashalchy heavy oil field. Seismic acquisition, data processing and results obtained at north-west dome heavy oil field are presented in this paper. Thermal field established in reservoir driven by SAGD has complicated distribution. It was found that steam chambers were mapped by low values of interval velocity and bright spot dynamic anomalies. Distribution of anomalies along seismic profiles let make an assumption that size and temperature of steam chamber are controlled by effective porosity of surrounding formation and integrity overlying seal. Dense rocks are observed around high temperature chamber. Dynamic anomalies are conditioned by hydrocarbon gas and hydrogen disulfide let out from heated heavy oil. Gas products accumulate at the reservoir top and also above low temperature chambers forming gas cap. The results obtained allow to recommend shallow seismic for monitoring steam chamber's dimensions in terrigenous reservoir within Cheremshan-Barstrick group of heavy oil fields