Documents / Report
This Defense Intelligence Reference Document from the Defense Intelligence Agency is dated 2 April 2010 and was produced under the Advanced Aerospace Weapon System Applications (AAWSA) Program. It is one of a series of advanced technology reports from FY 2009. It reviews general relativistic warp drives, the cosmological constant, Casimir energy and extra space dimensions. It proposes that dark energy may come from higher dimensions and that controlling those dimensions could one day make a warp drive possible.
UNCLASSIFIED//P:SR 8PP:IOIIIIL ~915 8HLY (E,.a,·) = Lv.+ + '1'i11gg1 + v'.111111/n,' i-1 (6.5) where the index i runs over the spectrum of Standard Model fermions. Using Equation (6.5), and slight variations, we are able to computationally build a model which demonstrates how the vacuum energy density varies as a function of higher dimensional radius. It cannot be overstated that a full understanding of the vacuum structure is of critical importance when attempting to understand the nature of dark energy and to investigate its possible manipulation. It is important to appreciate that, for example, a physical electron does not actually have to be present at a specific point in space for it to contribute to the vacuum energy density. But that the vacuum always has the potential to allow an electron to exist at any point in space. Thus, at all points in space a virtual electron exists. This virtual electron is a basic and fundamental feature of the intrinsic makeup of spacetime itself. In this way, empty space has a ground state energy that is due to the virtual contributions of all fields that occur in nature: electrons, quarks, photons, and indeed, the entire particle zoo. Many attempts have been made to relate this vacuum energy to dark energy; however, because these quantum fields are free to oscillate over a wide range of possible frequencies, when one calculates the sum 15 of all the contributions from all possible frequencies of the vacuum, an energy density far in excess of that seen in nature is recovered (Reference 50). Our own work (Reference 51, 53) has demonstrated that when the contribution due to the extra-dimensional quantum vacuum fields is included, it is possible to "tune" the theoretical energy density of the universe to agree with experimental observations using extensions of Equation (6.5), provided allowance for certain exotic fields to exist within the higher dimension. Although this may at first appear counterintuitive, one novel feature of the quantum vacuum energy is that it can contribute both positive and negative energy to the vacuum. The sign of the contribution is fundamentally due to the nature of the underlying virtual quantum field. For example, virtual fermionic fields (e.g., electrons) contribute an overall positive energy to the vacuum, whereas virtual bosonic fields contribute an overall negative energy. In this way, certain field combinations allow for energy cancellations. The additional freedom encountered in higher dimensional theories means that it is a fairly straightforward matter to adjust the overall vacuum energy density to agree with the experimentally measured value for the cosmological constant. Essentially, this means that one is immediately presented with a natural explanation for the existence of dark energy. Previous attempts to link dark energy to the vacuum energy had yielded grossly high theoretical predictions far in excess of that observed in nature; however, by including the contributions from higher dimensional fields we have shown that the taming of this dark energy density is entirely possible. The significance of this result is that it provides a foundation upon which to explore possibilities relating to warp drive propulsion. More simply, once one knows why space expands, it becomes possible to explore technological possibilities to potentially make space expand. 15 Technically we integrate over all the possible frequencies. 14 UNCLASSIFIED//FOR OFFIClllls WlilE 8HLY
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Report, from the dia collection. The PDF is mirrored here; the original link is above. 33 pages are in the text index: search them above, or from the library's search.