Non-thermal dark matter via Affleck-Dine baryogenesis and its detection possibility

The formation and late time decays of Q-balls are generic consequences of the Affleck-Dine (AD) baryogenesis. A substantial amount of the lightest supersymmetry (SUSY) particles (LSPs) are produced non-thermally as the decay products of these Q-balls. This requires a significantly large annihilation cross section of the LSP so as not to overclose the universe, which predicts a higgsino- or wino-like LSP instead of the standard bino LSP. We have reexamined the AD baryogenesis with special attention to the late-time decays of the Q-balls, and then specified the parameter regions where the LSPs produced by the Q-ball decays result in a cosmologically interesting mass density of dark matter by adopting several SUSY breaking models. This reveals new cosmologically interesting parameter regions, which have not attracted much attention so far. We have also investigated the prospects of direct and indirect detection of these dark matter candidates, and found that there is an intriguing possibility to detect them in various next generation dark matter searches.Comment: 51 pages, 18 figures, version accepted for publication in Physical Review

Snow and Snow Avalanches

Observations made between 1933 and 1941 at an experimental station of the Kirov Railway, Murmansk, have been taken as the basis of this work. The purpose of these observations was to investigate the conditions causing snowslides and to explain the variation in slides due to the nature of their movements, the form of snow deposition, and the snow action on obstacles

Математические модели прогнозирования экологической угрозы техногенных аварий и катастроф в составе интегрированных систем безопасности региона

Mathematical models of ecological damage forecasting as a result of man-made accidents and catastrophes are considered. For the measure of damage which occurs abruptly is taken the cost of ecological consequences liquidation. The prediction is carried out by formalizing the simulation of jumps. Conditionally deterministic or stochastic models are applied, the first - with a short period of retrospection and small amounts of information, and the second - with significantly large volumes. The principle of “maximum uncertainty”, formalized in the form of maximum entropy, is used.Рассмотрены математические модели прогнозирования экологического ущерба в результате техногенных аварий и катастроф. Мерой ущерба, возникающего скачкообразно, принята стоимость проведения мероприятий по ликвидации экологических последствий. Прогнозирование проведено путем формализации моделирования скачков. Применены условно детерминированные или стохастические модели, первые - при коротком периоде ретроспекции и незначительном объеме информации, а вторые - при существенно большем объеме. Использован принцип «максимума неопределенности», формализованный в форме максимума энтропии