Time Machine at the LHC

Understand

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.