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Emergent de Sitter epoch of the Loop Quantum Cosmos: a detailed analysis

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arxiv 1906.05315 v1 pith:35TG7KZ6 submitted 2019-06-12 gr-qc hep-th

Mehdi Assanioussi , Andrea Dapor , Klaus Liegener , Tomasz Pawlowski This is my paper · ORCID
classification gr-qchep-th
keywords quantumloopanalysisbouncedetailedemergentepochevolution
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We present a detailed analysis of a quantum model for Loop Quantum Cosmology based on strict application of the Thiemann regularization algorithm for the Hamiltonian in Loop Quantum Gravity, extending the results presented previously in our brief report. This construction leads to a qualitative modification of the bounce paradigm. Quantum gravity effects still lead to a quantum bounce connecting deterministically large classical Universes. However, the evolution features a large epoch of de Sitter Universe, with emergent cosmological constant of Planckian order, smoothly transiting into a spatially flat expanding Universe. Moreover, we present an effective Hamiltonian describing the quantum evolution to high accuracy and for which the dynamics can be solved analytically.

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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. Asymmetric Quantum Oppenheimer-Snyder Collapse

    gr-qc 2026-08 conditional novelty 6.0 of 10

    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.

  2. Effects of the ekpyrotic mechanism on inflationary phase in loop quantum cosmologies

    gr-qc 2025-10 conditional novelty 5.0 of 10

    In LQC and mLQC-I, tuned ekpyrotic-plus-inflation potentials can yield w>1 at the bounce and at least 60 e-folds of post-bounce inflation.

  3. An Extended Second Law of Thermodynamics

    gr-qc 2025-10 reject novelty 3.0 of 10

    The paper postulates that the second law should read sign(T)dS ≥ 0, permitting entropy decrease for negative-temperature systems, and illustrates it with LQC and Onsager vortices.

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