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The plane symmetric vacuum solutions of modified field equations in metric f(R) gravity

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Abstract

The f(R) theories of gravity have been interested in recent years. A considerable amount of work has been devoted to the study of modified field equations with the assumption of constant Ricci scalar which may be zero or nonzero. In this paper, the exact vacuum solutions of plane symmetric spacetime are analyzed in f(R) theory of gravity. The modified field equations are studied not only for R=constant but also for general case R≠constant. In particular, we show that the Novotný-Horský and anti-de Sitter spacetimes are the exact solutions of the field equations with the non-zero constant Ricci scalar. Finally, the family of solutions with R≠constant is obtained explicitly which includes the Novotný-Horský, Kottler-Whittaker, Taub and conformally flat spacetimes.

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Notes

  1. The gravitational units with c=G=1 are used.

  2. μ is the covariant derivative associated with the Levi-Civita connection of the metric.

  3. This function has been widely used in many fields, some of them have been described in detail by Corless et al. (1996).

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Acknowledgements

This research has been supported in part by the Islamic Azad University-Kashan Branch.

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Correspondence to Morteza Yavari.

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Yavari, M. The plane symmetric vacuum solutions of modified field equations in metric f(R) gravity. Astrophys Space Sci 348, 293–302 (2013). https://doi.org/10.1007/s10509-013-1565-4

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  • DOI: https://doi.org/10.1007/s10509-013-1565-4

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