Dynamical analysis approaches in spatially curved FRW spacetimes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10441147" target="_blank" >RIV/00216208:11320/20:10441147 - isvavai.cz</a>
Result on the web
<a href="https://proceedings.physics.cz/" target="_blank" >https://proceedings.physics.cz/</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Dynamical analysis approaches in spatially curved FRW spacetimes
Original language description
In this article, we summarize two agnostic approaches in the framework of spatially curved Friedmann-Robertson-Walker (FRW) cosmologies discussed in detail in (Kerachian et al., 2020, 2019). The first case concerns the dynamics of a fluid with an unspecified barotropic equation of state (EoS), for which the only assumption made is the non-negativity of the fluid's energy density. The second case concerns the dynamics of a non-minimally coupled real scalar field with unspecified positive potential. For each of these models, we define a new set of dimensionless variables and a new evolution parameter. In the framework of these agnostic setups, we are able to identify several general features, like symmetries, invariant subsets and critical points, and provide their cosmological interpretation.
Czech name
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Czech description
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Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of RAGtime 20-22: Workshops on black holes and neutron stars
ISBN
978-80-7510-432-8
ISSN
2336-5668
e-ISSN
2336-5676
Number of pages
11
Pages from-to
133-143
Publisher name
Silesian University in Opava
Place of publication
Opava
Event location
Opava
Event date
Sep 16, 2019
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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