3 papers
gr-qc2020
An axially symmetric spacetime with causality violation
Bidyut Bikash Hazarika
We present an axially symmetric spacetime which contains closed timelike curves, and hence violates the causality condition. The metric belongs to type III in the Petrov classifica…
physics.gen-ph2019
Axial symmetry cosmological constant vacuum solution of field equations with a curvature singularity, closed time-like curves and deviation of geodesics
Faizuddin Ahmed, Bidyut Bikash Hazarika, Debojit Sarma
In this paper, we present a type D, non-vanishing cosmological constant, vacuum solution of the Einstein's field equations, extension of an axially symmetric, asymptotically flat v…
gr-qc2016
Cylindrical symmetry locally isometric spacetime
Faizuddin Ahmed, Davood Momeni, Debojit Sarma +2
We present a maximally symmetric vacuum spacetime, which is locally isometric anti- de Sitter, admitting closed timelike curves appear after a definite instant of time i.e., a time…