Back-in-Time and Faster-than-Light Travel in General Relativity

  • Geometrical Introduction
    • Spacetimes
    • Local Geodesic Structure
      • Geodesics
      • Normal, Convex and Simple Neighbourhoods
    • The Time
      • The Past and the Future
      • Causality Condition
      • Causally Convex and Strongly Causal Sets
    • Global Hyperbolicity
    • Perfectly Simple Spacetimes
    • Cutting and Pasting’ Spacetimes.
  • Physical Predilections
    • Locality
    • The Maximal Speed and Causality
    • Shortcuts
    • Time Machines
    • A No-Go Theorem for the Artificial Time Machine
    • Time Travel Paradoxes
  • Quantum Corrections
  • WEC-Related Quantum Restrictions
  • Primordial Wormhole
  • At and Beyond the Horizon