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gr-qc2002★ 1 cited
Time, Closed Timelike Curves and Causality
Francisco Lobo, Paulo Crawford
General Relativity is contaminated with non-trivial geometries which generate closed timelike curves. These apparently violate causality, producing time-travel paradoxes. We shall…
gr-qc2002★ 47 cited
Weak energy condition violation and superluminal travel
Francisco Lobo, Paulo Crawford
Recent solutions to the Einstein Field Equations involving negative energy densities, i.e., matter violating the weak-energy-condition, have been obtained, namely traversable wormh…