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This is an unclassified Defense Intelligence Reference Document (DIA-08-1003-015), dated 29 March 2010. The Defense Intelligence Agency prepared it under the Advanced Aerospace Weapon System Applications (AAWSA) Program, and Rep. Burchett entered it into the House committee record. The paper uses a general relativity metric tensor approach to look at how engineering spacetime might enable propulsion, including warp drives, apparent superluminal travel, reduced effective mass and antigravity. It finds these ideas consistent with physics but far beyond present engineering capability.
UNCLASSIFIED// Table 1. Metric Effects on Physical Processes in an Altered Spacetime as Interpreted by a Remote (Unaltered Spacetime) Observer Variable Typical Stellar Mass (g„„ I) Spacetime-Engineered Metric (goo >I. gni At/ V g„„ Time Interval Redshift toward lower frequencies Blueshift toward higher frequencies co —> ni jg,„, Frequency Energy E —> EV g Energy states lowered Energy states raised Objects (for example, rulers) shrink Objects (for example, rulers) expandSpatial r l A —> dr/ \g„ Velocity 11 = e —> e jX00 / — Xi i Effective v c Effective mass increases Effective mass decreasesMass in = E/c 2 —> g„ V g00 )m Gravitational "force" f (goo ,g111 "Gravitational" "Antigravitational" Spatial Interval Again, by considering the case typical for an altered spacetime metric in the vicinity of, say, a stellar mass, then 1—g„ >1 for the radial dimension .1.-1 = r, as expressed by the second term in Equation (4). Therefore, local measurements with physical rulers within the altered spacetime yield a spatial interval \I—g u dr > Jr ; thus a spatial interval dr between two locations in an undistorted spacetime—say, remote from the mass—would be judged by local (proper) measurement from within the altered spacetime to be greater. From this one can rightly infer that, relatively speaking, rulers (atomic spacings and so forth) within the altered spacetime are shrunken relative to their values in unaltered spacetime. Given this result, a physical object (for example, atomic orbit) that possesses a measure A r in unaltered spacetime shrinks to Ar —> 1—g„ when placed within the altered spacetime. Conversely, under conditions for which <1, objects would expand—thus the fourth entry for the table of physical effects. Velocity of Light in Spacetime-Altered Regions Interior to a spacetime region altered by, say, a dense mass (for example, a black hole), the locally measured velocity of light c in, say, the xi = r direction is given by the ratio of locally measured (proper) distance/time intervals for a propagating light signal (Reference 13). Nign cir — — cLI gc „,dt (6) 4 UNCLASSIFIED
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