Something useful about time control:
An overview by Dr. David Lewis Anderson
The ability to control time in both a forward and backwards direction is possible within the laws of our mathematics and physics. The chart below (click for larger view) compares ten different technologies an methods. Key characteristics are identified for each and described below.
Under each key characteristic is a column with either a solid or empty circle. A solid circle indicates a key characteristic is supported by the indicated technology or method, an empty circle indicates it is not.
“Time Control” indicates whether travel to future, past, or both are possible. “Matter Transport” is solid if both matter and information can be transported, empty if only information can be transported. “Tech Viability” is solid if the technology or method is viable with present state-of-the-art technology or within two generations. “Possible Without Exotic Materials” is solid if materials required are available today or within two generations. “Relatively Low Input Power” is solid if time control is achievable within power generation capabilities available today or within two generations.
The time control technologies and methods above include the following:
Quantum Tunneling: is an evanescent wave coupling effect that occurs in quantum mechanics. The correct wavelength combined with the proper tunneling barrier makes it possible to pass signals faster than light, backwards in time. Near-Lightspeed Travel: has the ability to significantly dilate time, sending an accelerating traveler rapidly forward in time relative to those left behind before her travel. The closer to the speed of light, the further into the future the travel. Alcubierre Warp Drive: stretches spacetime in a wave causing the fabric of space ahead of a spacecraft to contract and the space behind it to expand. The ship can ride the wave to accelerate to high speeds and time travel. Faster-than-Light Travel: is a controversial subject. According to special relativity anything that could travel faster-than-light would move backward in time. As the same time, special relativity states that this would require infinite energy. Time-warped Fields: use energy within curvatures of spacetime around a rotating mass or energy field to generate containable and controllable fields of closed-timelike curves that can move matter and information forward or backward in time. Circulating Light Beams: can be created using gamma and magnetic fields to warp time. The approach can twist space that causes time to be twisted, meaning you could theoretically walk through time as you walk through space. Wormholes: are hypothetical areas of warped spacetime with great energy that can create tunnels through spacetime. if traversable would allow a traveler to quickly move through great distances in space and also travel through time. Cosmic Strings: are a hypothetical 1-dimensional (spatially) topological defect in the fabric of spacetime left over from the formation of the universe. Interaction could create fields of closed timelike curves permitting backwards time travel. Tipler Cylinder: uses a massive and long cylinder spinning around its longitudinal axis. The rotation creates a frame-dragging effect and fields of closed timelike curves traversable in a way to achieve subluminal time travel to the past. Casimir Effect: a physical force arising from a quantized field, for example between two uncharged plates. This can produce a locally mass-negative region of space-time that could stabilize a wormhole to allow faster than light travel.