Sombras de agujeros de gusano estáticos usando el formalismo de la métrica de Jacobi generalizada
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Date
2024
Authors
León Arteaga, Axel Jamil
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Publisher
Universidad Nacional de Trujillo
Abstract
En este trabajo se presenta el cálculo de la sombra de un espacio-tiempo de agujero de gusano con carga del tipo Morris-Thorne, empleando el formalismo de la métrica de Jacobi generalizada. Esta técnica proporciona un espacio tiempo de dimensión menor que hereda las ecuaciones geodésicas, nulas y temporales, incluso después de la proyección sobre superficies generadas por vectores de Killing. Esto nos permitió determinar la ubicación y estabilidad de la esfera de fotones utilizan- do la curvatura geodésica, el Teorema de Hadamard y el signo de la curvatura de Gauss. Se encontró que la única órbita circular estable en la garganta se relaciona con la curvatura de Gauss de la métrica de Jacobi y la sombra del agujero de gusano
Abstract This work presents the calculation of the shadow of a charged Morris-Thorne type wormhole spacetime using the formalism of the generalized Jacobi metric. This technique provides a lower-dimensional spacetime that inherits the null and timelike geodesic equations even after projection onto surfaces generated by Killing vectors. This allowed us to determine the location and stability of the photon sphere using the geodesic curvature, Hadamard’s theorem, and the sign of the Gaussian curvature. It was found that the only stable circular orbit in the throat is related to the Gaussian curvature of the Jacobi metric and the shadow of the wormhole
Abstract This work presents the calculation of the shadow of a charged Morris-Thorne type wormhole spacetime using the formalism of the generalized Jacobi metric. This technique provides a lower-dimensional spacetime that inherits the null and timelike geodesic equations even after projection onto surfaces generated by Killing vectors. This allowed us to determine the location and stability of the photon sphere using the geodesic curvature, Hadamard’s theorem, and the sign of the Gaussian curvature. It was found that the only stable circular orbit in the throat is related to the Gaussian curvature of the Jacobi metric and the shadow of the wormhole
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Keywords
Agujeros de gusano, Curvatura de Gauss, Sombras, Geometría de Riemann