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Comment: 11 pages; v.2: Some clarifying remarks added, to appear in PRD
Comment: 25 pages, 1 figure; v2: added comments and references; v3: cosmetics; v4: corrected error in spin-1 portion of calculation; v5: fixed typos in Eqns. (80,85)
Comment: 23 pages, 1 figure; v2: fixed error in Eqn. (70) and resulting bounds on c's
Comment: 14 pages; v2: minor comments added
Comment: 28 pages, 2 figures; v.2: added comments on defining energy, and references
Comment: 4 pages, 1 figure; v.2: added demonstration that fermion doubling does not occur, added appendix proving convergence, other minor changes of presentation
Comment: 5 pages, 1 figure; v2. Added reference, and a remark concerning the assumption that the entropy radiated in fields responsible for Lorentz symmetry breaking is negligible
One of the deepest and most long-standing mysteries in physics has been the huge discrepancy between the observed vacuum density and our expectations from theories of high energy physics, which has been dubbed the Old Cosmological Constant problem. One proposal to address this puzzle at the semi-classical level is to decouple quantum vacuum from space-time geometry via a modification of gravity that includes an incompressible fluid, known as Gravitational Aether. In this paper, we discuss classical predictions of this theory along with its compatibility with cosmological and experimental tests of gravity. We argue that deviations from General Relativity (GR) in this theory are sourced by pressure or vorticity. In particular, the theory predicts that the gravitational constant for radiation is 33% larger than that of non-relativistic ...
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