"Charged" Particle's Tunneling from Rotating Black Holes

The behavior of a scalar field theory near the event horizon in a rotating black hole background can be effectively described by a two dimensional field theory in a gauge field background. Based on this fact, we proposal that the quantum tunneling from rotating black hole can be treated as "charged" particle' s tunneling process in its effectively two dimensional metric. Using this viewpoint and considering the corresponding "gauge charge" conservation, we calculate the non-thermal tunneling rate of Kerr black hole and Myers-Perry black hole, and results are consistent with Parikh-Wilczek's original result for spherically symmetric black holes. Especially for Myers-Perry black hole which has multi-rotation parameters, our calculation fills in the gap existing in the literature applying Parikh-Wilczek's tunneling method to various types black holes. Our derivation further illuminates the essential role of effective gauge symmetry in Hawking radiation from rotating black holes.Comment: 15 pages, no figure; any comments are welcome

Professional competence of graduates as employment guarantee

In the article the basic problems of employment of graduates and their solutions in the current market conditionsРассмотрены основные проблемы трудоустройства выпускников вузов и пути их решения в современных рыночных условия

Roughness coefficient of the Instruch riverbed

The article presents the results of improving the numerical method developed in [1-3] for calculating the roughness coefficient of the riverbed (RCOTR) to increase stability and using it to study the dependence of the RCOTR of the Instruch River on dimensionless complexes in different seasons

Black Hole Entropy: From Shannon to Bekenstein

In this note we have applied directly the Shannon formula for information theory entropy to derive the Black Hole (Bekenstein-Hawking) entropy. Our analysis is semi-classical in nature since we use the (recently proposed [8]) quantum mechanical near horizon mode functions to compute the tunneling probability that goes in to the Shannon formula, following the general idea of [5]. Our framework conforms to the information theoretic origin of Black Hole entropy, as originally proposed by Bekenstein.Comment: 9 pages Latex, Comments are welcome; Thoroughly revised version, reference and acknowledgements sections enlarged, numerical error in final result corrected, no major changes, to appear in IJT

Composition of Hydrocarbons in Oils from Central Part of the Eastern Siberia

Состав насыщенных и ароматических углеводородов (УВ) нефтей центральной части Восточной Сибири был изучен методом газожидкостной хроматографии и хромато-масс- спектрометрии. Показано, что исходное органическое вещество всех исследованных нефтей формировалось в морских условиях, а степень его термического преобразования максимальна в нефтях из рифейских отложений Байкитской НГО. По термической зрелости органического вещества, а также по характеру молекулярно-массового распределения насыщенных и ароматических УВ, содержащих длинный алкильный заместитель, рифейские нефти образуют отдельную группу. Вторую группу составляют нефти венд-кембрийских отложений Катангской и Непско-Ботуобинской НГОThe composition of saturated and aromatic hydrocarbons (HC) of oils in the Central part of Eastern Siberia was studied by gas-chromatography and chromato-mass-spectrometry. It is shown that the source organic matter of all studied oils were formed in marine conditions, and the level of its thermal conversion maximum in oils from Riphean deposits of the Baikit petroleum-bearing region (PBR). According to the thermal maturity of organic matter, as well as by the nature of the molecular mass distribution of saturated and aromatic HC containing long alkyl chain substituent, Riphean oil form a independent group. The second group consists of oils from Vendian-Cambrian sediments of the Katanga, and Nepa-Botuobian PB