Alternatives to this concept are named after Ori and Soen as well as Krasnikov, who discovered that a hypothetical observer inside it would be (*) causally disconnected from an observer at its surface.  
This concept's canonical form can be derived using Rindler's method, and Harold White has published papers arguing both for and against the York Time as an underlying mechanism.  Alternatives to this concept are named after Ori and Soen as well as Krasnikov, who discovered that a hypothetical observer inside it would be (*) causally disconnected from an observer at its surface.  It was inspired by both cosmic inflation and the Casimir Effect, and one sticking point is its dependence on negative energy density.  This solution to the Einstein equation was posited in a 1994 paper subtitled "Hyper-fast Travel Within General Relativity."  For 10 points, name this theoretical region of space-time that could break away from the surrounding space-time and start moving faster than the speed of light, named after the Mexican physicist and astronomer who theorized it.
This concept's canonical form can be derived using Rindler's method, and Harold White has published papers arguing both for and against the York Time as an underlying mechanism.  
{Alcubierre} warp drive (metric), or {Alcubierre} (warp) bubble (6)