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Oscillatory Universe, dark energy and general relativity

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Abstract

The concept of oscillatory Universe appears to be realistic and buried in the dynamic dark energy equation of state. We explore its evolutionary history under the framework of general relativity. We observe that oscillations do not go unnoticed with such an equation of state and that their effects persist later on in cosmic evolution. The ‘classical’ general relativity seems to retain the past history of oscillatory Universe in the form of increasing scale factor as the classical thermodynamics retains this history in the form of increasing cosmological entropy.

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Acknowledgements

SR and AAU are thankful to the authority of Inter-University Centre for Astronomy and Astrophysics, Pune, India for providing Visiting Associateship under which a part of this work was carried out. We all are also thankful to the referee for raising some pertinent issues which helped us to improve the standard of the manuscript.

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Correspondence to Saibal Ray.

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Ghosh, P.P., Ray, S., Usmani, A.A. et al. Oscillatory Universe, dark energy and general relativity. Astrophys Space Sci 345, 367–371 (2013). https://doi.org/10.1007/s10509-013-1390-9

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  • DOI: https://doi.org/10.1007/s10509-013-1390-9

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