Determinant-Gravity: Cosmological implications
| dc.creator | Comelli, D. | |
| dc.creator | Dolgov, A. | |
| dc.date | 2004-04-15 | |
| dc.date | 2004-04-20 | |
| dc.date.accessioned | 2026-07-07T10:48:15Z | |
| dc.date.available | 2026-07-07T10:48:15Z | |
| dc.description | We analyze the action $\int d^4x \sqrt{\det||{\cal B} g_{μν}+ {\cal C} R_{μν}}||$ as a possible alternative or addition to the Einstein gravity. Choosing a particular form of ${\cal B}(R)= \sqrt {R}$ we can restore the Einstein gravity and, if ${\cal B}=m^2$, we obtain the cosmological constant term. Taking ${\cal B} = m^2 + {\cal B}_1 R$ and expanding the action in $ 1/m^2$, we obtain as a leading term the Einstein Lagrangian with a cosmological constant proportional to $m^4$ and a series of higher order operators. In general case of non-vanishing ${\cal B}$ and ${\cal C}$ new cosmological solutions for the Robertson-Walker metric are obtained. | |
| dc.description | revtex format, 5 pages,8 figures,references added | |
| dc.identifier | https://arxiv.org/abs/gr-qc/0404065 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/0404065 | |
| dc.identifier | JHEP0411:062,2004 | |
| dc.identifier | doi:10.1088/1126-6708/2004/11/062 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/183810 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Determinant-Gravity: Cosmological implications | |
| dc.type | text |