https://dspace.kpfu.ru/xmlui/handle/net/108447 Лекции школы иматериалы семинара / Под общей редакцией заслуженного деятеля науки РТ,доктора физ.-мат. наук, проф. Ю.Г. Игнатьева., 05.11.2016-07.11.2016 Tue, 07 Apr 2026 20:05:08 GMT 2026-04-07T20:05:08Z https://dspace.kpfu.ru/xmlui/handle/net/108545 Qualitative analysis and numerical simulation of equations of the standard cosmological model: Λ /= 0 Ignatev, Jurij Gennadievich On the basis of qualitative analysis of the system of differential equations of the standard cosmological model it is shown that in the case of zero cosmological constant this system has a stable center corresponding to zero values of potential and its derivative at infinity. Thus, the cosmological model based on single massive classical scalar field in infinite future would give a flat Universe. The carried out numerical simulation of the dynamic system corresponding to the system of Einstein - Klein - Gordon equations showed that at great times of the evolution the invariant cosmological acceleration has an oscillating character and changes from -2 (braking), to +1 (acceleration). Average value of the cosmological acceleration is negative and is equal to -1/2. Oscillations of the cosmological acceleration happen on the background of rapidly falling Hubble constant. In the case of nonzero value of the cosmological constant depending on its value there are possible three various qualitative behavior types of the dynamic system on 2-dimensional plane (, ), which correspond either to zero attractive focus or to stable attractive knot with zero values of the potential and its derivative. Herewith the system asymptotically enters the secondary inflation. Carried out numerical simulation showed that at cosmological constant (m23?10-8 the macroscopic value of the cosmological acceleration behaves itself similar to the case = 0, i.e. in the course of the cosmological evolution there appears a lasting stage when this value is close to -1/2 which corresponds to non-relativistic equation of state. Fri, 01 Jan 2016 00:00:00 GMT https://dspace.kpfu.ru/xmlui/handle/net/108545 2016-01-01T00:00:00Z https://dspace.kpfu.ru/xmlui/handle/net/108507 Воспоминания о профессоре А.З. Петрове Владимиров Юрий Сергеевич Воспоминания о профессоре А.З. Петрове Fri, 01 Jan 2016 00:00:00 GMT https://dspace.kpfu.ru/xmlui/handle/net/108507 2016-01-01T00:00:00Z https://dspace.kpfu.ru/xmlui/handle/net/108496 Нелинейности в передаче энергии Нургалиев И.С. Рассматривается проблема передачи энергии на расстояния с минимальными потерями. Приведены несколько подходов для решения такой задачи.; The problem of effective energy transfer is considered. A few approaches are proposed for solving this task. Fri, 01 Jan 2016 00:00:00 GMT https://dspace.kpfu.ru/xmlui/handle/net/108496 2016-01-01T00:00:00Z https://dspace.kpfu.ru/xmlui/handle/net/108495 Временные эффекты коллапса волнового пакета в суперпространстве Уилера Гуц Александр Константинович Описана квантовая процедура переходов между различными историческими эпохами, отстоящими друг от друга в физическом космологическом времени. Механизм перехода может быть назван негёделевской машиной времени.; The quantum transitions between the different historical epochs, separated from each other in the physical cosmological time. This transition mechanism may be named non-Gödel time machine. Fri, 01 Jan 2016 00:00:00 GMT https://dspace.kpfu.ru/xmlui/handle/net/108495 2016-01-01T00:00:00Z