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A higher-dimensional view on quantum cosmology

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arxiv 2105.03253 v2 pith:JC5KHOKZ submitted 2021-05-07 hep-th gr-qc

U. H. Danielsson , D. Panizo , R. Tielemans , T. Van Riet This is my paper · ORCID
classification hep-thgr-qc
keywords cosmologyboundarybubblequantumamplitudearguebraneworldchoice
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We argue that the choice of boundary condition for the wave function in quantum cosmology depends on the UV completion of general relativity. We provide an explicit example using a braneworld scenario in which a de Sitter cosmology is induced on the surface of a Coleman-de Luccia bubble in a 5-dimensional AdS space. The corresponding boundary conditions are unambigously fixed by demanding consistency with the known physics of bubble nucleation and this selects the Vilenkin weighting for the amplitude from a 4D viewpoint.

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Cited by 3 Pith papers

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  1. Weak gravity at micron scales from dark bubble cosmology and its cosmological consequences

    hep-th 2025-11 conditional novelty 7.0 of 10

    Dark bubble cosmology predicts gravity weakens below L~10^-5 m, yielding V=-G4M(1/rho - 3L^2/(2rho^3)+...) and a radiation-only inflationary phase.

  2. Quantum nucleation of black hole mimickers via chaos dominated tunneling

    hep-th 2026-07 conditional novelty 6.5 of 10

    Chaos-dominated multichannel tunneling can eliminate exponential barrier suppression, enabling quantum nucleation of black shells and other black-hole mimickers.

  3. Dark bubble cosmology and the equivalence principle

    hep-ph 2025-07 conditional novelty 6.0 of 10

    In dark bubble cosmology, non-abelian gauge fields like gluons would couple to induced gravity with the wrong sign, making the proton's gravitational mass about 1% of its inertial mass and ruling out the scenario agai...

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