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pro vyhledávání: '"Ion Cotăescu"'
Autor:
Ion I. Cotăescu, Ion Cotăescu
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 10, Pp 1-10 (2023)
Abstract The discrete symmetries of Dirac’s free field on the de Sitter manifold are studied, taking into account that this has two portions that can play the role of physical space-times, namely an expanding and a collapsing universe. The proper d
Externí odkaz:
https://doaj.org/article/cb4f40d0bcb04db5bcd30a35d60f9d45
Autor:
Ion I. Cotăescu, Ion Cotăescu
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 7, Pp 1-10 (2021)
Abstract We study for the first time the propagation of the packets of plane waves of the Maxwell free field in the de Sitter expanding universe as detected by an observer staying at rest in his proper frame with physical de Sitter–Painlevé coordi
Externí odkaz:
https://doaj.org/article/8b088f5322574e9b94f7600e9e798c09
Autor:
Ion I. Cotăescu, Ion Cotăescu
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 8, Pp 1-6 (2019)
Abstract A new type of integral representation is proposed for the propagators of the massive Klein–Gordon field minimally coupled to gravity of the de Sitter expanding universe. This representation encapsulates the effects of the Heaviside step fu
Externí odkaz:
https://doaj.org/article/99fcb0faef1043bea849284d4563f600
The exact solutions of the complete Dirac equation for fermions moving in ideal Aharonov-Bohm rings are used for deriving the exact expressions of the relativistic partial currents. It is show that as in the non-relativistic case these currents can b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::beeaf83498e0695abf88461796919434
