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This Defense Intelligence Reference Document from the Defense Intelligence Agency, dated 6 April 2010, is one in a series of FY 2009 advanced technology reports produced under the Advanced Aerospace Weapon System Applications (AAWSA) program. It reviews the physics of zero-point field energy in the quantum vacuum and proposed schemes for extracting it, including the Casimir effect, Forward's vacuum-fluctuation battery, and resonant dielectric spheres. It notes that no practicable extraction technique has been demonstrated in the laboratory.
“Edwards Air Force Base”1 page
UNCLASSIFIED/ 'FOR QFFICICP 1!55 ODIi Y • presence of cosmological spacetime curvature, and 2) the high-frequency modes are unaffected by the presence of cosmological spacetime curvature so they take the flat Minkowski spacetime form; that is, these modes contribute nothing to the physical vacuum energy (Reference 4). This then enforces a very low-frequency cutoff that renormalizes the total vacuum energy, leading to a minute residual cosmological vacuum energy density of 10 9 J/m3, which has been observed. Also, investigators studying supersymmetric and superstring quantum gravity theories have proposed the limited cancellation of some positive energy electromagnetic ZPF modes by some negative energy fermionic (Dirac vacuum) ZPF modes as an explanation for the observed minute vacuum energy density. ELEMENTS OF SED THEORY An alternative to QED, stochastic electrodynamics (SED) identifies the origin of the ZPF as a direct consequence of a classical ZPF background. SED begins with the ordinary classical electrodynamics of Maxwell and Lorentz, but instead of assuming the traditional homogeneous solution of the source-free differential wave equations for the electromagnetic potentials, one instead considers that due to multiple charged particles moving throughout the universe, there is always a random electromagnetic radiation background present that affects the particle(s) in any experiment. This new boundary condition (random radiation background) replaces the prior null background of traditional classical electrodynamics. Moreover, the principle of relativity dictates that identical experiments performed in different inertial frames must yield the same result, and that this random classical electromagnetic radiation must be isotropic in all inertial frames; it is invariant under scattering by a dipole oscillator, invariant under redshift (Doppler, cosmological, gravitational, no Einstein-Hopf drag force), and must therefore have a Lorentz-invariant energy density spectrum. The only energy density spectrum that obeys such conditions is one that is proportional to the cubic power of the frequency. Interestingly, this is exactly the same frequency dependence as that of the QED spectral ZPF energy density described above, when the temperature Tis set to zero in Equation (1). Thus in SED, the random radiation assumes the role of the ZPE of QED, and is termed the classical electromagnetic ZPE. Planck's constant appears then in SED as an adjustable parameter that sets the scale of the ZPE spectral density. The formulation of the SED model has evolved over time, beginning with the work of Nernst in 1916 and the later foundational work of Marshall and Boyer in the 1960s (Reference 14). The original Standard SED model was based on random phases with fixed electric-field mode amplitudes. The more recent Modified SED model employs random phases with random electric-field mode amplitudes and a full probability distribution for the ground state amplitude, in agreement with quantum theory (Reference 16). A comparison of SED with quantum theory shows that the first and second moments of the spectral energy distribution are identical, but beyond that, the distributions diverge widely. Nevertheless, several quantum theory results have been reproduced by means of the SED approach, such as (Reference 14, 17): • Quantum mechanical harmonic oscillator. • Lamb shift. • Blackbody radiation. 6 UNCLASSIFIED//P8"1 8ffll!l"'I! l!l!il! 8111!¥
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Report, from the dia collection. The PDF is mirrored here; the original link is above. 57 pages are in the text index: search them above, or from the library's search.