Time Machine at the LHC

Abstract

Recently, black hole and brane production at CERN's Large Hadron Collider (LHC) has been widely discussed. We suggest that there is a possibility to test causality at the LHC. We argue that if the scale of quantum gravity is of the order of few TeVs, proton-proton collisions at the LHC could lead to the formation of time machines (spacetime regions with closed timelike curves) which violate causality. One model for the time machine is a traversable wormhole. We argue that the traversable wormhole production cross section at the LHC is of the same order as the cross section for the black hole production. Traversable wormholes assume violation of the null energy condition (NEC) and an exotic matter similar to the dark energy is required. Decay of the wormholes/time machines and signatures of time machine events at the LHC are discussed.

12 pages, LATEX, comments and references added

References in corpus (9)

• The Einstein Equations on the 3-Brane World
• Black Holes at the LHC
• High Energy Colliders as Black Hole Factories: The End of Short Distance Physics
• Morris-Thorne wormholes with a cosmological constant
• Black holes in Godel universes and pp-waves
• Brane surgery: energy conditions, traversable wormholes, and voids
• Wavefunction of a Black Hole and the Dynamical Origin of Entropy
• Gravitational Field Equations on and off a 3-Brane World
• On the Null Energy Condition and Cosmology

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• Relativistic Laser-Matter Interaction and Relativistic Laboratory Astrophysics
• Critical Formation of Trapped Surfaces in the Collision of Non-expanding Gravitational Shock Waves in de Sitter Space-Time
• Critical Trapped Surfaces Formation in the Collision of Ultrarelativistic Charges in (A)dS
• Causality-Violating Higgs Singlets at the LHC
• Catalysis of Black Holes/Wormholes Formation in High Energy Collisions
• Cauchy Problem on Non-globally Hyperbolic Spacetimes
• The universe formation by a space reduction cascade with random initial parameters