vestifmИзвестия Национальной академии наук Беларуси. Серия физико-математических наукProceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series1561-24302524-2415The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"vestifm-285Research ArticleФИЗИКАPHYSICSРОЖДЕНИЕ МАТЕРИИ И АНИЗОТРОПИЯ МИКРОВОЛНОВОГО РЕЛИКТОВОГО ИЗЛУЧЕНИЯ В БЕЗЫНФЛЯЦИОННЫХ КОСМОЛОГИЯХMATTER CREATION AND PRIMORDIAL CMB SPECTRUM IN THE INFLATIONLESS MILNE-LIKE COSMOLOGIESЧеркасС. Л.CherkasS. L.

кандидат физико-математических наук, старший научный сотрудник

ул. Бобруйская, 11, 220030, г. Минск

Ph. D. (Physics and Mathematics), Senior Researcher

11, Bobruiskaya Str., 220050, Minsk

cherkas@inp.minsk.byКалашниковВ. Л.KalashnikovV. L.

кандидат физико-математических наук, старший научный сотрудник

Gusshausstrasse 27/387, A-1040, г. Вена

Ph. D. (Physics and Mathematics), Senior Researcher, Institute of Photonics

27/387, Gusshausstrasse, A-1040, Vienna

vladimir.kalashnikov@tuwien.ac.atИнститут ядерных проблем Белорусского государственного университетаInstitute for Nuclear Problems of the Belarusian State UniversityВенский технический университетVienna University of Technology201723012018048897Copyright © Черкас С.Л., Калашников В.Л., 20182018Черкас С.Л., Калашников В.Л.Cherkas S.L., Kalashnikov V.L.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestifm.belnauka.by/jour/article/view/285

Рассматривается рождение материи в альтернативных безынфляционных космологиях, в которых масштабный фактор растет линейно со временем. Вычисляется первоначальный спектр неоднородностей плотности родившихся скалярных частиц. Если потребовать универсальность спектра, т. е. чтобы среднюю плотность энергии и характерную величину неоднородности плотности энергии можно было задавать произвольно, то форма спектра оказывается полностью фиксированной. Спектр близок по форме к плоскому спектру Хариссона – Зельдовича, но с подавлением низкочастоных мод. 

The primordial spectrum of scalar particleʼs density perturbations is calculated. On the assumption of spectrum universality, i.e., a mean energy density and a typical value of inhomogeneity can be chosen arbitrarily, the form of the spectrum turns out to be completely defined. It is close to the flat Harrison – Zeldovich spectrum, but with the suppression of low-frequency modes. 

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The authors declare that there are no conflicts of interest present.