Superposition of FLRW universes
| buir.contributor.author | Gürses, Metin | |
| buir.contributor.author | Yaghoub, Heydarzade | |
| dc.citation.epage | 12 | en_US |
| dc.citation.issueNumber | 6 | en_US |
| dc.citation.spage | 1 | en_US |
| dc.citation.volumeNumber | 2020 | en_US |
| dc.contributor.author | Gürses, Metin | |
| dc.contributor.author | Yaghoub, Heydarzade | |
| dc.contributor.author | Tekin, B. | |
| dc.date.accessioned | 2021-02-12T10:40:56Z | |
| dc.date.available | 2021-02-12T10:40:56Z | |
| dc.date.issued | 2020 | |
| dc.department | Department of Mathematics | en_US |
| dc.description.abstract | We show that (1) the Einstein field equations with a perfect fluid source admit a nonlinear superposition of two distinct homogenous Friedman-Lemaitre-Robertson-Walker (FLRW) metrics as a solution, (2) the superposed solution is an inhomogeneous geometry in general, (3) it reduces to a homogeneous one in the two asymptotes which are the early and the late stages of the universe as described by two different FLRW metrics, (4) the solution possesses a scale factor inversion symmetry and (5) the solution implies two kinds of topology changes: one during the time evolution of the superposed universe and the other occurring in the asymptotic region of space. | en_US |
| dc.identifier.doi | 10.1088/1475-7516/2020/06/060 | en_US |
| dc.identifier.issn | 1475-7516 | |
| dc.identifier.uri | http://hdl.handle.net/11693/55108 | |
| dc.language.iso | English | en_US |
| dc.publisher | Institute of Physics Publishing | en_US |
| dc.relation.isversionof | https://dx.doi.org/10.1088/1475-7516/2020/06/060 | en_US |
| dc.source.title | Journal of Cosmology and Astroparticle Physics | en_US |
| dc.subject | Cosmic singularity | en_US |
| dc.subject | Cosmological phase transitions | en_US |
| dc.subject | Cosmology of theories beyond the SM | en_US |
| dc.subject | Dark energy theory | en_US |
| dc.title | Superposition of FLRW universes | en_US |
| dc.type | Article | en_US |