Publication:
Bouncing and cyclic quantum primordial universes and the ordering problem

Дата
2020
Авторы
Torres, I.
Fabris, J. C.
Piattella, O. F.
Journal Title
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Научные группы
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
Выпуск журнала
Аннотация
In a Bohmian quantum cosmology scenario, we investigate some quantum effects on the evolution of the primordial universe arising from the adoption of an alternative non-trivial ordering to the quantization of the constrained Hamiltonian of a minimally coupled scalar field. The Wheeler-DeWitt equation has a contribution from the change in factor ordering, hence there are new quantum effects. We compare the results between the non-trivial and the trivial ordering cases, showing that the classical limit is valid for both orderings, but new bouncing and cyclic solutions are present in the non-trivial case. Additionally, we show that the non-singular solutions already present in the trivial ordering formalism keep valid.
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Цитирование
Bouncing and cyclic quantum primordial universes and the ordering problem / Torres, I, Fabris, JC, Piattella, OF // Classical and Quantum Gravity. - 2020. - 37. - № 10. - 10.1088/1361-6382/ab8354
URI
https://www.doi.org/10.1088/1361-6382/ab8354
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85085127798&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000531240900001
 https://openrepository.mephi.ru/handle/123456789/21660
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