TY - EJOUR
AU - Ahmed, Faizuddin
AU - Kayum, Abdul
AU - Choudhury, Monjur Alom
AU - Hassan, Mahmudul
PY - 2024
DA - February
TI - Deflection of null and time-like geodesics in topological defects space-time geometry
T2 - Journal of Theoretical and Applied Physics
VL - 18
L1 - https://oiccpress.com/journal-of-theoretical-and-applied-physics/article/deflection-of-null-and-time-like-geodesics-in-topological-defects-space-time-geometry-2/
DO - 10.57647/j.jtap.2024.1801.12
N2 - In this research, we investigate the bending of photon light and/or time-like geodesics within the context of four-dimensional space-time geometry, specifically in the presence of topological defects. These topological defects manifest as cosmic string space-time configurations, encompassing screw dislocation, spiral dislocation, and spacelike dislocation. Our primary objective is to determine the extent of deflection experienced by light-like and time-like geodesics and analyze how this deflection is affected by the cosmic string parameter, screw dislocation parameter, and spacelike dislocation parameter. To accomplish this, we employ a derivation technique that centers on the observation that photon rays (light-like geodesics) and/or time-like geodesics follow paths parallel to the z-axis while maintaining a constant radius along the cylinder.
IS - 1
PB - OICC Press
KW - Topological defects, Geodesics motion, Gravitational lensing 
EN -