2019
DOI: 10.1142/s0218271819410104
|View full text |Cite
|
Sign up to set email alerts
|

Inflation in anisotropic brane universe using tachyon field

Abstract: Cosmological solution to the gravitational field equations in the generalized Randall-Sundrum model for an anisotropic brane with Bianchi I geometry and perfect fluid as matter sources has been considered. The matter on the brane is described by a tachyonic field. The solution admits inflationary era and at a later epoch the anisotropy of the universe washes out. We obtain two classes of cosmological scenario, in the first case universe evolves from singularity and in the second case universe expands without s… Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

0
7
0

Year Published

2021
2021
2024
2024

Publication Types

Select...
6
1

Relationship

4
3

Authors

Journals

citations
Cited by 11 publications
(8 citation statements)
references
References 32 publications
0
7
0
Order By: Relevance
“…It is usually considered that both the radial and tangential components of the tidal acceleration on the observer is not more than the acceleration due to gravity on the earth. Once, we know both the metric potentials of the wormhole, it is possible to compute the tidal accelerations using the components of the Riemann tensor as shown in Eqns ( 31)- (32). We make a reasonable approximation that the velocity with which the traveller traverses the wormhole is negligeble compared to the velocity of light, which simplifies the Lorentz factor to unity.…”
Section: Tidal Accelerationmentioning
confidence: 99%
See 3 more Smart Citations
“…It is usually considered that both the radial and tangential components of the tidal acceleration on the observer is not more than the acceleration due to gravity on the earth. Once, we know both the metric potentials of the wormhole, it is possible to compute the tidal accelerations using the components of the Riemann tensor as shown in Eqns ( 31)- (32). We make a reasonable approximation that the velocity with which the traveller traverses the wormhole is negligeble compared to the velocity of light, which simplifies the Lorentz factor to unity.…”
Section: Tidal Accelerationmentioning
confidence: 99%
“…The standard model forces are confined to the brane, while gravity is free to propagate in the bulk. In the Randall-Sundrum (RS) single brane model [44], which is of particular interest in the cosmological context [51,52,53,54,55,56,57,58,59,60], the extra dimension is spacelike, characterized by a bulk space of Lorentzian signature. The brane tension is positive and the bulk space is Anti-deSitter (AdS 5 ), sourced by a negative cosmological constant.…”
Section: Introductionmentioning
confidence: 99%
See 2 more Smart Citations
“…There is a phenomenon of rolling of the tachyon from the unstable maximum to a stable average, expected value in the vacuum. This phenomenon finds applications in cosmology [11,12,13,14]. However, our case is different as in the cosmological applications time-dependent configurations of the tachyon field find use but here we will make use of spatially dependent configurations [15,16,17].…”
Section: Introductionmentioning
confidence: 99%