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gr-qc2017★ 11 cited
Vacuum states for gravitons field in de Sitter space
Kazuharu Bamba, Surena Rahbardehghan, Hamed Pejhan
In this paper, considering the linearized Einstein equation with a two-parameter family of linear covariant gauges in de Sitter spacetime, we examine possible vacuum states for the…
gr-qc2017
On the graviton two-point function and its infrared behavior in de Sitter spacetime
Surena Rahbardehghan, Hamed Pejhan
In our previous paper (Phys. Rev. D 94, 104030 (2016)), inspired by the work of Allen and Turyn (Nucl. Phys. B 292, 813 (1987)), we expressed the graviton two-point function in ter…