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arXiv · 1801.05640

On Propagation of Energy Flux in de Sitter Spacetime

Sk Jahanur Hoque·Amitabh Virmani
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Abstract

In this paper, we explore propagation of energy flux in the future Poincar\'e patch of de Sitter spacetime. We present two results. First, we compute the flux integral of energy using the symplectic current density of the covariant phase space approach on hypersurfaces of constant radial physical distance. Using this computation we show that in the tt-projection, the integrand in the energy flux expression on the cosmological horizon is same as that on the future null infinity. This suggests that propagation of energy flux in de Sitter spacetime is sharp. Second, we relate our energy flux expression in tt-projection to a previously obtained expression using the Isaacson stress-tensor approach. We also comment on the energy flux computation in TT-gauge on hypersurfaces of constant radial physical distance.

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Sk Jahanur Hoque, Amitabh Virmani. 2018-01-17. On Propagation of Energy Flux in de Sitter Spacetime. https://doi.org/10.1007/s10714-018-2359-3

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