Wormhole-Induced cosmic scenario in f(G) gravity with a k-essence field.
Saved in:
| Title: | Wormhole-Induced cosmic scenario in f(G) gravity with a k-essence field. |
|---|---|
| Authors: | Dutta, M. K.1 (AUTHOR) mkdbrsnc@gmail.com, Modak, B.2 (AUTHOR) bijan.phy@gmail.com |
| Source: | Modern Physics Letters A. 8/10/2025, Vol. 40 Issue 24, p1-22. 22p. |
| Subjects: | Wormholes (Physics), Einstein-Gauss-Bonnet gravity, Physical cosmology, Energy density, Field theory (Physics), Gauss-Bonnet theorem |
| Abstract: | In this paper, we present some analytic solutions of wormhole in four-dimensional Robertson–Walker Euclidean background with a function f (G) , where G is Gauss–Bonnet curvature and a k-essence field for k = 0. The solutions are obtained assuming an ansatz on f (G) with some additional assumptions on potential of the dilaton field and energy density of Gauss–Bonnet term. The Euclidean wormhole, in one case, asymptotically yields oscillating universe in Lorentzian time. In another solution, stable wormhole evolves through early transient inflationary era and after graceful exit from inflation, it yields a stable radiation dominated era asymptotically. The deceleration parameter, jerk and snap parameters are studied with cosmic time and they support observational data. The function f (G) obtained from the solution is consistent with earlier works. We also have another wormhole configuration, which is accompanied by oscillation of the scale factor in Euclidean time at an intermediate era and yields exponential expansion in the asymptotic domain. The magnitude of potential is found to decay. The violation of the null energy condition can be avoided asymptotically in all cases. [ABSTRACT FROM AUTHOR] |
| Copyright of Modern Physics Letters A is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 186508386 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Wormhole-Induced cosmic scenario in f(G) gravity with a k-essence field. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Dutta%2C+M%2E+K%2E%22">Dutta, M. K.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mkdbrsnc@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Modak%2C+B%2E%22">Modak, B.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> bijan.phy@gmail.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Modern+Physics+Letters+A%22">Modern Physics Letters A</searchLink>. 8/10/2025, Vol. 40 Issue 24, p1-22. 22p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Wormholes+%28Physics%29%22">Wormholes (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Einstein-Gauss-Bonnet+gravity%22">Einstein-Gauss-Bonnet gravity</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+cosmology%22">Physical cosmology</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+density%22">Energy density</searchLink><br /><searchLink fieldCode="DE" term="%22Field+theory+%28Physics%29%22">Field theory (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Gauss-Bonnet+theorem%22">Gauss-Bonnet theorem</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In this paper, we present some analytic solutions of wormhole in four-dimensional Robertson–Walker Euclidean background with a function f (G) , where G is Gauss–Bonnet curvature and a k-essence field for k = 0. The solutions are obtained assuming an ansatz on f (G) with some additional assumptions on potential of the dilaton field and energy density of Gauss–Bonnet term. The Euclidean wormhole, in one case, asymptotically yields oscillating universe in Lorentzian time. In another solution, stable wormhole evolves through early transient inflationary era and after graceful exit from inflation, it yields a stable radiation dominated era asymptotically. The deceleration parameter, jerk and snap parameters are studied with cosmic time and they support observational data. The function f (G) obtained from the solution is consistent with earlier works. We also have another wormhole configuration, which is accompanied by oscillation of the scale factor in Euclidean time at an intermediate era and yields exponential expansion in the asymptotic domain. The magnitude of potential is found to decay. The violation of the null energy condition can be avoided asymptotically in all cases. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Modern Physics Letters A is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=186508386 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1142/S0217732325500841 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 22 StartPage: 1 Subjects: – SubjectFull: Wormholes (Physics) Type: general – SubjectFull: Einstein-Gauss-Bonnet gravity Type: general – SubjectFull: Physical cosmology Type: general – SubjectFull: Energy density Type: general – SubjectFull: Field theory (Physics) Type: general – SubjectFull: Gauss-Bonnet theorem Type: general Titles: – TitleFull: Wormhole-Induced cosmic scenario in f(G) gravity with a k-essence field. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Dutta, M. K. – PersonEntity: Name: NameFull: Modak, B. IsPartOfRelationships: – BibEntity: Dates: – D: 10 M: 08 Text: 8/10/2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 02177323 Numbering: – Type: volume Value: 40 – Type: issue Value: 24 Titles: – TitleFull: Modern Physics Letters A Type: main |
| ResultId | 1 |
