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Quantum Linear Gravity in de Sitter Universe on Gupta-Bleuler Vacuum State

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Abstract

Application of Krein space quantization to the linear gravity in de Sitter space-time have constructed on Gupta-Bleuler vacuum state, resulting in removal of infrared divergence and preserving de Sitter covariant. By pursuing this path, the non uniqueness of vacuum expectation value of the product of field operators in curved space-time disappears as well. Then the vacuum expectation value of the product of field operators can be defined properly and uniquely.

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Acknowledgments

We are grateful to J. Iliopoulos and J.P. Gazeau for their helpful discussions and S. Teymourpoor for her interest in this work.

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Authors and Affiliations

  1. Department of Physics, Razi University, Kermanshah, Iran

    M. Enayati & M. V. Takook

  2. Department of Physics, Science and Research Branch, Islamic Azad University, Tehran, Iran

    S. Rouhani

Authors
  1. M. Enayati
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  2. M. V. Takook
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  3. S. Rouhani
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Correspondence to M. Enayati.

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Enayati, M., Takook, M.V. & Rouhani, S. Quantum Linear Gravity in de Sitter Universe on Gupta-Bleuler Vacuum State. Int J Theor Phys 56, 1068–1084 (2017). https://doi.org/10.1007/s10773-016-3249-7

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  • DOI: https://doi.org/10.1007/s10773-016-3249-7

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