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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'9"1 err1e1111t tl9I!! eHLY quantum fields is divergent, as is the infinite summation over the extra-dimensional KK modes; however, as mentioned earlier, dimensional regularization (a form of renormalization) can be used to extract a finite result. This equation differs from Equation (4.1) in that the quantum field that we consider has both mass and a degree of freedom in the higher dimension. Working with a scalar field, the result can later be extended simply for the case of more phenomenologically viable fields (fermions, for example). Our own research focuses upon exploring a new way to handle the infinities arising from Equation (6.1), and after performing a novel regularization it was discovered that: (6.2) where ( is the Riemann zeta function, and K512(2mrn) is the modified Bessel function of the second kind. Although the summation is infinite, the function converges rapidly and so a good approximation is obtained by performing the sum up to n = 10. Since discovering this formula, the result agrees with derivations of this energy based on different regularization methods and so one is confident in the validity of Equation (6.2). It is relatively straightforward to calculate the contributions to the vacuum energy density coming from each field in the Standard Model of particle physics. For example, the electron is a fundamental quantum field whose ubiquitous ground state energy contributes to the vacuum energy density. Similarly, the photon is a fundamental quantum field whose ubiquitous ground state energy also contributes to the vacuum energy density. In fact, all Standard Model fields contribute a finite and calculable component to the overall energy density of space. Equation (5.1) expresses the vacuum energy density for a periodic massive scalar field. Using knowledge of supersymmetry multiplets it is possible to enumerate this energy for all fields occurring in the Standard Model (Reference 49): V1 ~.,,,,,,,,,(r) = -4V-(r), V,,:""Jr) ~ 2V. (r). Also, knowledge of the vacuum energy density for a massless field: will allow one to fully articulate the energy density of the vacuum in terms of the building blocks of nature. This is expressed algebraically as: 13 UNCLASSIFIED/ ,<ran 8FFIOIAI! tl9! 8PIL¥ (6.3) (6.4)
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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.