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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

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

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  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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