Multiscalar-torsion cosmology: exact and analytic solutions from noether symmetries

被引:5
|
作者
Dialektopoulos, K. [1 ,2 ]
Leon, G. [3 ,4 ]
Paliathanasis, A. [3 ,4 ]
机构
[1] Nazarbayev Univ, Dept Phys, 53 Kabanbay Batyr Ave, Astana 010000, Kazakhstan
[2] Aristotle Univ Thessaloniki, Fac Engn, Lab Phys, Thessaloniki 54124, Greece
[3] Univ Catolica Norte, Dept Matemat, Avda Angamos 0610,Casilla 1280, Antofagasta, Chile
[4] Durban Univ Technol, Inst Syst Sci, POB 1334, ZA-4000 Durban, South Africa
来源
EUROPEAN PHYSICAL JOURNAL C | 2023年 / 83卷 / 03期
关键词
MODIFIED GRAVITY; F T; DYNAMICS;
D O I
10.1140/epjc/s10052-023-11374-5
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The Noether symmetry analysis is applied in a multiscalar field cosmological model in teleparallel gravity. In particular, we consider two scalar fields with interaction in scalar-torsion theory. The field equations have a minisuperspace description, and the evolution of the physical variables depends on the potential function that drives the scalar fields' dynamics. With the requirement for the field equations to admit non-trivial Noether point symmetries and the use of the first theorem of Noether, we constrain all the functional forms for the potential. Finally, we apply symmetry vectors and the corresponding conservation laws to determine exact and analytic solutions in multiscalar-torsion cosmology.
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页数:11
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