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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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adequate Coulomb repulsion. 9 Equation (8) shows that a 1 km radius throat will require
a cavity plate separation of 1.28 x 10- 16 m (smaller than a nuclear diameter), which
gives pEc = - 1.62 x 1036 J/m 3 for this configuration . In contrast, a wormhole with a
throat radius of 1 AU will require a plate separation of 1.57 x 10-12 m (or 35% smaller
than the electron's Compton wavelength), which results in an energy density of -7.14 x
1019 J/m 3. 10 There is no technology known today t hat can engineer a cavity with such
minuscule plate separations. In addition, such minuscule plate separations are
unrealistic because the Casimir effect switches over to the non-retarded field behavior
( ~ a3) of van der Waals forces when plate separations go below the wavelength (::::: 10
nm) where they are no longer perfectly conducting (Reference 58). This scheme will not
be considered any further. However, future work will be necessary to elucidate whether
the various quantum field analogs of the Casimir effect can provide a more reaso nable
technical solution to this problem.
IV. Constructing a Traversable Wormhole is not Easy
A. NEGATIVE ENERGY REQUIREMENTS AND ENERGY CONDITION
VIOLATIONS
One knows how to make small quantities of negative energy in the lab. But one does
not know if it is possible to make large quantities of negative energy. It was pointed out
in Section III that one, some, or all of the classical energy conditions must be violated
in order to build a traversable wormhole. And it was also cautioned that this was not a
showstopper because the energy conditions have all been violated by nature or by lab
experiment prior to their formulation. However, the reader should be forewarned that
there are a number of published claims that the energy condition violations can be
avoided. These claims are just semantic games whereby investigators universally
invoke the following scenario: divide the total stress-energy into weird matter plus
normal matter, push all the energy condition violations into the weird matter so that
the normal matter does not violate the energy conditions. Given that the energy
conditions are not absolute, such rearranging approaches are not necessary.
Traversable wormhole throats violate the NEC (or ANEC). So how big a violation is
required? The answer is that there is only need to calculate the amount of negative
energy that will be needed to generate and hold open a wormhole throat. A simple
formula for short-throat wormholes using the thin shell formalism gives this quantity in
terms of the equivalent mass (note: the energy density derived from the general
relativistic field equation is too complex to use for this mass comparison) (Reference
3):
9 I n a detai led analysis the electrostatic energy required to support the Coulomb repulsion between the plates
would be considered separately.
10 Mean Earth-Sun distance, 1 AU =1.50 x 10 11 m .
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