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This Defense Intelligence Reference Document, DIA-08-1004-004, is dated 6 April 2010. The Acquisition Support Division of the Defense Intelligence Agency's Defense Warning Office prepared it as one in a series of advanced technology reports from FY 2009 under the Advanced Aerospace Weapon System Applications Program. It reviews the physics of traversable wormholes and flat-faced "stargate" solutions, and it covers how negative energy might be generated in the laboratory. It concludes that the key technical challenge is identifying and producing exotic matter.
From the source: Release of 2026-09-18 Incident: 4/6/10, Las Vegas, Nevada. Released with redactions. This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP’s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD’s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD examines traversable wormholes and “stargates” as hypothetical spacetime structures within general relativity that theoretically offer a means of faster-than-light travel or communication. The report focuses extensively on the requirement for exotic, negative-energy matter to stabilize and keep such geometries open for the passage of macro-scale objects. It reviews standard wormhole models, describes a flat-throated “stargate” variant, and argues that violations of general relativity's standard energy conditions do not physically rule such structures out, citing microscopic, transient negative-energy effects observed in Casimir-type laboratory phenomena. However, the document acknowledges that the transition from microscopic quantum fluctuations to macroscopic engineering is an unresolved barrier. While small-scale negative-energy effects are observable, there is no known mechanism to generate, concentrate, or stabilize the amounts of exotic matter proposed to be required to sustain a traversable macroscopic wormhole. Ultimately, while the paper frames wormhole concepts within accepted relativistic physics, it confirms that the gap between theoretical models and any realizable technology remains enormous.
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• There is no singularity of infinitely collapsed matter residing at the wormhole throat.
These requirements then lead us to define a spherically symmetric Lorentzian
spacetime metric, ds2,2 that prescribes the required traversable wormhole geometry
(Reference 1, 3):
ds2 = - e2lf!2 = dff- + sin2 Bdq}, r/1,.r) is the freely specifiable
redshift function that defines the proper t ime lapse through the wormhole throat, and
b(r) is the freely specifiable shape function that defines the wormhole throat's spatial
(hypersurface) geometry. The throat is spherically shaped. There are a large number of
variations of Equation ( 1), which define traversable wormholes having different
properties. The reader should consult (Reference 3) for further details . By inserting
Equation (1) into the Einstein field equation and cranking through the math, one can
derive the density and flux of energy and momentum (a.k.a. pressure) encoded by T,,v
for the source of matter that is required to produce the traversable wormhole. The
results show that the source of matter must have zero or negative energy density
and/or an outward radial tension (negative pressure) that is larger than the magnitude
of the energy density (Reference 1-3). Travelers moving through the throat at very
high speed will tend to measure a negative energy density. These exotic properties are
required to create and thread open the wormhole, and stabilize it against collapse (see
Section III for more details).
The technical description of a trip through a spherically symmetric traversable
wormhole is simply given by the proper time and/or the proper distance of travel
through its throat as measured by space travelers, while the (radial) travel velocity
through the throat is v = v(r) < c. The proper time of travel as measured by space
travelers going through the wormhole is given by /J., = f(yv) -1dA, where y = [1 -
( v/c)2J - 112 and the integration (over the element of proper distance, d1c) is taken from
the wormhole entrance to its exit. The proper distance of travel as measured by the
space travelers is /J.1c = v!J.,. Remote static observers watching the space travelers go
through the wormhole will measure their travel time to be M = f(ve <P('"l)- 1d). and their
travel distance will be t,,.). = vM, where the integration is taken over the same limits as
before.
2 A spacetime metric, ds2, is a Lorentz-invariant distance function between any two points in spacetime that is
defined by ds2 = gμ,dX1'dx '', where 9w is the metric tensor which is a 4x4 matrix that encodes the geometry of
spacetime and dxμ is the infinitesimal coordinate separation between two points.
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2 Not linked to a story yet.
Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 42 pages are in the text index: search them above, or from the library's search.