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Covariant LTB collapse in models of loop quantum gravity
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Models of gravitational collapse provide important means to test whether non-classical space-time effects motivated for instance by quantum gravity can be realized in generic ways in physically relevant situations. Here, a detailed analysis of marginally bound Lemaitre-Tolman-Bondi space-times is given in emergent modified gravity, which in particular includes a covariant formulation of holonomy modifications usually considered in models of loop quantum gravity. As a result, generic collapse in this setting is shown to imply a physical singularity that removes the bouncing behavior seen in vacuum space-times with the same type of modifications.
Forward citations
Cited by 2 Pith papers
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Asymmetric Quantum Oppenheimer-Snyder Collapse
Asymmetric loop-quantum-cosmology collapse of a dust ball yields a geodesically complete, bouncing regular black hole spacetime with a C^0 shock at the dust surface and two joined vacuum geometries.
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Emergent field theory
Spacetime geometry and Yang-Mills field strengths are generated from phase-space structure functions, yielding modified gravity and gauge theories with no new degrees of freedom.
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