Misner space

Misner space is an abstract mathematical spacetime, discovered by Charles Misner of the University of Maryland. It is also known as the Lorentzian orbifold $\mathbb {R} ^{1,1}/{\text{boost}}$ .

An intuitive analogy may be drawn with a video game screen, where a screen element exits the frame through the right side, only to re-enter the frame right away through the left side.

Moving the spatial limits (e.g.: the walls of a room) enclosing an existing Misner space in the physical world, could theoretically lead to time travel.

References

M. Berkooz, B. Pioline, M. Rozali. Closed Strings in Misner Space: Cosmological Production of Winding Strings, Journal of Cosmology and Astroparticle Physics.

Time travel

General terms and concepts	Chronology protection conjecture Closed timelike curve Novikov self-consistency principle Self-fulfilling prophecy Quantum mechanics of time travel

Time travel in fiction	Timelines in fiction in science fiction in games

Temporal paradoxes	Grandfather paradox Causal loop

Parallel timelines	Alternate history Many-worlds interpretation Multiverse Parallel universe (fiction) Alternative future

Philosophy of space and time	Butterfly effect Determinism Eternalism Fatalism Free will Predestination

Spacetimes in general relativity that can contain closed timelike curves	Alcubierre metric BTZ black hole Gödel metric Kerr metric Krasnikov tube Misner space Tipler cylinder van Stockum dust Traversable wormholes

Time travel urban legends	Moberly–Jourdain incident Philadelphia Experiment Montauk Project Chronovisor Billy Meier Rudolph Fentz John Titor

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