Einstein equations with fluctuating volume
- 作者: Dzhunushaliev V.1,2, Quevedo H.3,4
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隶属关系:
- Physical-Technical Faculty
- IETP
- Instituto de Ciencias Nucleares
- Dipartimento di Fisica and ICRA
- 期: 卷 23, 编号 3 (2017)
- 页面: 280-286
- 栏目: Article
- URL: https://journals.rcsi.science/0202-2893/article/view/176093
- DOI: https://doi.org/10.1134/S0202289317030033
- ID: 176093
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详细
We develop a simple model for a study of classical fields in the background of a fluctuating spacetime volume. It is applied for a formulation of the Einstein equations with a perfect-fluid source. We investigate the particular case of a Friedmann-Lemaître-Robertson-Walker cosmology and show that the resulting field equations can lead to solutions which avoid the initial Big Bang singularity. By interpreting the fluctuations as a result of the presence of quantum spacetime, we conclude that classical singularities can be avoided even within a semiclassical model that includes quantum effects in a very simple manner.
作者简介
Vladimir Dzhunushaliev
Physical-Technical Faculty; IETP
编辑信件的主要联系方式.
Email: v.dzhunushaliev@gmail.com
哈萨克斯坦, al-Farabi av. 71, Almaty, 050040; Almaty, 050040
Hernando Quevedo
Instituto de Ciencias Nucleares; Dipartimento di Fisica and ICRA
Email: v.dzhunushaliev@gmail.com
墨西哥, México, DF 04510; Piazzale Aldo Moro 5, Roma, I-00185
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