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arXiv · 1808.02728

A small non-vanishing cosmological constant from the Krein-Gupta-Bleuler vacuum

Hamed Pejhan·Kazuharu Bamba·Mohammad Enayati·Surena Rahbardehghan
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Abstract

We point out a potential relevance between the Krein-Gupta-Bleuler (KGB) vacuum leading to a fully covariant quantum field theory for gravity in de Sitter (dS) spacetime and the observable smallness of the cosmological constant. This may provide a formulation of linear quantum gravity in a framework amenable to developing a more complete theory determining the value of the cosmological constant.

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Hamed Pejhan, Kazuharu Bamba, Mohammad Enayati, Surena Rahbardehghan. 2018-08-08. A small non-vanishing cosmological constant from the Krein-Gupta-Bleuler vacuum. https://doi.org/10.1016/j.physletb.2018.09.017

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