Research PaperNo Access

Extended gravitational decoupling approach in $f (𝒢)$ gravity

M. Sharif

http://orcid.org/0000-0001-6845-3506

Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, Pakistan

E-mail Address: msharif.math@pu.edu.pk

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and

Saadia Saba

Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore 54590, Pakistan

E-mail Address: saadia.saba86@gmail.com

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https://doi.org/10.1142/S0218271820500418Cited by:40 (Source: Crossref)

Abstract

In this paper, we explore decoupled anisotropic interior solutions for static sphere using extended gravitational decoupling technique in $f (𝒢)$ gravity. We choose Tolman-IV solution as the isotropic interior source describing compact spherical geometry and extend its domains to determine two anisotropic models using some physical constraints. We test physical acceptability of both models for the compact star PSRJ1416-2230 through physical parameters, energy bounds and causality condition. It is observed that both models are physically viable as well as stable. It is also found that the first star model becomes more dense at its core as compared to the second for a small increase in the coupling constant $ξ$ .

Keywords:

PACS: 04.20.Jb, 04.40.Dg, 04.50.Kd

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References

1. J. Ovalle, Mod. Phys. Lett. A 23 (2008) 3247. Link, Web of Science, ADS, Google Scholar
2. J. Ovalle and F. Linares, Phys. Rev. D 88 (2013) 104026. Web of Science, ADS, Google Scholar
3. J. Ovalle et al., Eur. Phys. J. C 78 (2018) 122. Web of Science, ADS, Google Scholar
4. M. Sharif and S. Sadiq, Eur. Phys. J. C 78 (2018) 410. Web of Science, ADS, Google Scholar
5. J. Ovalle et al., Eur. Phys. J. C 78 (2018) 960. Web of Science, ADS, Google Scholar
6. E. Morales and F. Tello-Ortiz, Eur. Phys. J. C 78 (2018) 618. Web of Science, ADS, Google Scholar
7. R. P. Graterol, Eur. Phys. J. Plus 133 (2018) 244. Web of Science, Google Scholar
8. L. Gabbanelli, Á. Rincón and C. Rubio, Eur. Phys. J. C 78 (2018) 370. Web of Science, ADS, Google Scholar
9. E. Contreras and P. Bargueño, Eur. Phys. J. C 78 (2018) 558. Web of Science, ADS, Google Scholar
10. G. Panotopoulos and Á. Rincón, Eur. Phys. J. C 78 (2018) 851. Web of Science, ADS, Google Scholar
11. M. Estrada and R. Prado, Eur. Phys. J. Plus 134 (2019) 168. Web of Science, Google Scholar
12. J. Ovalle, C. Posada and Z. Stuchlík, arXiv:1905.12452. Google Scholar
13. V. Torres and E. Contreras, Eur. Phys. J. C 79 (2019) 829. Web of Science, ADS, Google Scholar
14. S. K. Maurya and F. Tello-Ortiz, Eur. Phys. J. C 79 (2019) 85. Web of Science, ADS, Google Scholar
15. S. Hensh and Z. Stuchlík, Eur. Phys. J. C 79 (2019) 834. Web of Science, ADS, Google Scholar
16. R. Casadio, J. Ovalle and R. da Rocha, Class. Quantum Grav. 32 (2015) 215020. Web of Science, ADS, Google Scholar
17. J. Ovalle, Phys. Rev. D 95 (2017) 104019; Phys. Lett. B 788 (2019) 213. Google Scholar
18. E. Contreras and P. Bargueño, Class. Quantum Grav. 36 (2019) 215009. Web of Science, ADS, Google Scholar
19. S. Nojiri and S. D. Odintsov, Phys. Lett. B 631 (2005) 1. Web of Science, ADS, Google Scholar
20. G. Calcagni, S. Tsujikawa and M. Sami, Class. Quantum Grav. 22 (2005) 3977; A. De Felice, M. Hindmarsh and M. Trodden, J. Cosmol. Astopart. Phys. 08 (2006) 005. Google Scholar
21. G. Abbas et al., Astrophys. Space Sci. 357 (2015) 158. Web of Science, ADS, Google Scholar
22. M. Sharif and I. Fatima, Int. J. Mod. Phys. D 25 (2016) 1650083. Link, Web of Science, ADS, Google Scholar
23. D. Debabrata, Phys. Rev. D 97 (2018) 084026. Web of Science, Google Scholar
24. M. Sharif and S. Saba, Eur. Phys. J. C 78 (2018) 921; Chin. J. Phys. 59 (2019) 481. Google Scholar
25. M. Sharif and A. Waseem, Ann. Phys. 405 (2019) 14; Chin. J. Phys. 60 (2019) 426. Google Scholar
26. M. Estrada, Eur. Phys. J. C 79 (2019) 918. Web of Science, ADS, Google Scholar
27. S. K. Maurya and F. Tello-Ortiz, Phys. Dark Universe 27 (2020) 100442. Web of Science, Google Scholar
28. M. Sharif and S. Saba, Chin. J. Phys. 63 (2020) 348. Web of Science, Google Scholar
29. P. Burikham, T. Harko and M. J. Lake, Phys. Rev. D 94 (2016) 064070. Web of Science, ADS, Google Scholar
30. L. Herrera, Phys. Lett. A 165 (1992) 206. Web of Science, ADS, Google Scholar
31. G. Cognola et al., Phys. Rev. D 73 (2006) 084007. Web of Science, ADS, Google Scholar