Related papers: Alice and Bob in an anisotropic expanding spacetime

Alice and Bob in an anisotropic expanding spacetime

URL: http://arxiv.org/abs/2008.01788v1
Date: Tue, 4 Aug 2020 19:42:16 GMT
Title: Alice and Bob in an anisotropic expanding spacetime
Authors: Helder A. S. Costa and Paulo R. S. Carvalho
Abstract summary: We investigate a quantum teleportation process between two comoving observers Alice and Bob in an anisotropic expanding spacetime. In this model, we calculate the fidelity of teleportation and we noted an oscillation of its spectrum as a function of the azimuthal angle.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: We investigate a quantum teleportation process between two comoving observers Alice and Bob in an anisotropic expanding spacetime. In this model, we calculate the fidelity of teleportation and we noted an oscillation of its spectrum as a function of the azimuthal angle. We found that for the polar angle $\phi = \frac{\pi}{2}$ and the azimuthal angle $\theta \neq \frac{3\pi}{4} + n\pi$ with $n = 0, 1, 2, ...$ the efficiency of the process decreases, i.e., the fidelity is less than one. In addition, it is shown that the anisotropic effects on the fidelity becomes more significative in the regime of smooth expansion and the limit of massless particles. On the other hand, the influence of curvature coupling becomes noticeable in the regime of fast expansion (values of $\frac{\rho}{\omega} \gg 1$).

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