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arXiv · 1010.5118

Reduction of entanglement degradation and teleportation improvement in Einstein-Gauss-Bonnet gravity

Bahram Nasr Esfahani·Mahmoud Shamirzai·Morteza Soltani
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Abstract

Bipartite entanglement for states of a non-interacting bosonic or fermionic field in the spacetime of a spherically symmetric black hole of Einstein-Gauss-Bonnet gravity, is investigated. Although the initial state is chosen to be maximally entangled as the Bell states, the Hawking-Unruh effect causes the state to be mixed and the entanglement degrades, but with different asymptotic behaviors for the fermionic and bosonic fields. The Gauss-Bonnet term with positive $α$ can play an anti-gravitation role and so this causes to decrease the Hawking-Unruh effect and consequently reduces the entanglement degradation. On the other hand, the suggested higher dimensions for the spacetime, lead to more entanglement degradation by increasing the dimension. There is a dramatic difference between the behaviors of the entanglement in terms of the radius of the horizon for a five-dimensional black hole and that for higher dimensional black holes.

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Bahram Nasr Esfahani, Mahmoud Shamirzai, Morteza Soltani. 2010-10-25. Reduction of entanglement degradation and teleportation improvement in Einstein-Gauss-Bonnet gravity. https://doi.org/10.1103/physrevd.84.025024

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