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- W2155595983 abstract "Quantum gravity has been so elusive because we have tried to approach it by two paths which can never meet: standard quantum field theory and general relativity. These contradict each other, not only in superdense regimes, but also in the vacuum, where the divergent zero-point energy would roll up space to a point. The solution is to build in a regular, but topologically nontrivial distribution of vacuum spinor fields right from the start. This opens up a straight road to quantum gravity, which we map out here. The gateway is covariance under the complexified Clifford algebra of our space-time manifold $$mathbb{M},$$ and its spinor representations, which Sachs dubbed the Einstein group, E. The 16 generators of E transformations obey both the Lie algebra of Spin c -4, and the Clifford (SUSY) algebra of $$mathbb{M}.$$ We derive Einstein’s field equations from the simplest E-invariant Lagrangian density, $$mathcal{L}_{g}. $$ $$mathcal{L}_{g} $$ contains effective electroweak and gravitostrong field actions, as well as Dirac actions for the matter spinors. On microscales the massive Dirac propagator resolves into a sum over null zig-zags. On macroscales, we see the energy-momentum current, *T, and the resulting Einstein curvature, G. For massive particles, *T flows in the “cosmic time” direction—centri-fugally in an expanding universe. Neighboring centrifugal currents of *T present opposite radiotemporal vorticities G or to the boundaries of each others’ worldtubes, so they advect, i.e. attract, as we show here by integrating $$mathcal{L}_{g} $$ by parts in the spinfluid regime. This boundary integral not only explains why stress-energy is the source for gravitational curvature, but also gives a value for the gravitational constant, κ (T), that couples them. κ turns out to depend on the dilation factor T = y 0, which enters kinematically as “imaginary time”: the logradius of our expanding Friedmann 3-brane. On the microscopic scale, quantum gravity appears as the statistical mechanics of the null zig-zag rays of spinor fields in imaginary time T. Our unified field/particle action $$mathcal{L}_{g} $$ also contains new couplings of gravitomagnetic fields to strong fields and weak potentials. These predict new physical phenomena: Axial jets of nuclear decay products emitted with left helicity along the axis of a massive, spinning body." @default.
- W2155595983 created "2016-06-24" @default.
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- W2155595983 date "2003-03-01" @default.
- W2155595983 modified "2023-10-16" @default.
- W2155595983 title "Clifford tetrads, null zig zags, and quantum gravity" @default.
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- W2155595983 doi "https://doi.org/10.1007/s00006-003-0002-0" @default.
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