Inthispaper, wefirstusetheopticalmetricsofblack-bouncetraversablewormholestocalculatetheGaussian curvature. Then we use the Gauss-Bonnet theorem to obtain the weak deflection angle of light from the black-bounce traversable wormholes. We investigate the effect of dark matter medium on weak deflection angle using the Gauss-Bonnet theorem. We show how weak deflection angle of wormhole is affected by the bounce parameter a. Using the Gauss-Bonnet theorem for calculating weak deflection angle shows us that light bending can be thought as a global and topological effect.
Relativity and gravitation, gravitational lensing, deflection angle, wormholes, Gauss-Bonnet theorem
"Weak deflection angle of black-bounce traversable wormholes using Gauss-Bonnet theorem in the dark matter medium,"
Turkish Journal of Physics: Vol. 44:
5, Article 6.
Available at: https://journals.tubitak.gov.tr/physics/vol44/iss5/6