In metric-affine bumblebee gravity, gravitational waves obey an orientation-dependent dispersion relation with only two tensor modes; timelike backgrounds shift propagation speed while spacelike ones add anisotropic quadrupole corrections plus a third-derivative term, allowing constraints on ξb².
Testing general relativity with present and future astrophysical observations,
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gr-qc 2years
2026 2verdicts
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Constructs Kruskal-Szekeres and Carter-Penrose diagrams for the Schwarzschild-like spacetime in Lorentz gauge theory, showing identical causal topology to Schwarzschild but with A0-controlled horizon radius, surface gravity, and geometry.
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Gravitational waves in metric-affine bumblebee gravity
In metric-affine bumblebee gravity, gravitational waves obey an orientation-dependent dispersion relation with only two tensor modes; timelike backgrounds shift propagation speed while spacelike ones add anisotropic quadrupole corrections plus a third-derivative term, allowing constraints on ξb².
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Maximal extension of Schwarzschild-like spacetimes in Lorentz gauge theory
Constructs Kruskal-Szekeres and Carter-Penrose diagrams for the Schwarzschild-like spacetime in Lorentz gauge theory, showing identical causal topology to Schwarzschild but with A0-controlled horizon radius, surface gravity, and geometry.