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Gravitational lensing in an energy-dependent spacetime metric. (English) Zbl 1263.83032

Summary: We explore the consequences in the calculation of deflection angle of photons, caused by a gravitational source of mass \(M\), for the case of an energy dependent metric. We analyze the corrections to the standard Schwarzschild case for the weak and strong limits. In both cases, the corrections to the deflection angle are of the order \(\epsilon/E_{\text{Pl}}\), where \(E_{\text{Pl}}\) is the Planck energy and \(\epsilon\), the energy of the photon at spatial infinite. The corrections to the angular separation image is also of order \(\epsilon/E_{\text{Pl}}\), for the weak limit, while in the strong case there is a corrective term with the shape \(\epsilon/E_{\text{Pl}} \,n\, e^{2n\pi}\) for the relativistic image of order \(n\). The amplification of the image is also discussed. Even if corrections are tiny, in both limits, we discuss the qualitative effects for different types of Lorentz invariance deformations.

MSC:

83C10 Equations of motion in general relativity and gravitational theory
83D05 Relativistic gravitational theories other than Einstein’s, including asymmetric field theories
83C57 Black holes
83A05 Special relativity
85A05 Galactic and stellar dynamics
70F15 Celestial mechanics
Full Text: DOI

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