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An introduction to quantum cosmology

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arxiv gr-qc/0101003 v2 pith:DN2WFXKV submitted 2000-12-30 gr-qc

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keywords quantumcosmologyquantisationintroductionminisuperspaceproposalactionapproximation
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This is an introductory set of lecture notes on quantum cosmology, given in 1995 to an audience with interests ranging from astronomy to particle physics. Topics covered: 1. Introduction: 1.1 Quantum cosmology and quantum gravity; 1.2 A brief history of quantum cosmology. 2. Hamiltonian formulation of general relativity: 2.1 The 3+1 decomposition; 2.2 The action. 3. Quantisation: 3.1 Superspace; 3.2 Canonical quantisation; 3.3 Path integral quantisation; 3.4 Minisuperspace; 3.5 The WKB approximation; 3.6 Probability measures; 3.7 Minisuperspace for the Friedmann universe with massive scalar field. 4. Boundary Conditions: 4.1 The no-boundary proposal; 4.2 The tunneling proposal. 5. The predictions of quantum cosmology: 5.1 The period of inflation; 5.2 The origin of density perturbations; 5.3 The arrow of time.

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  1. Quantum Einsteinian Cubic Cosmology

    gr-qc 2026-03 conditional novelty 5.0 of 10

    FRW Cosmological Einsteinian Cubic Gravity admits an explicit Hamiltonian after canonical transforms and yields exact flat and WKB closed Wheeler–DeWitt solutions with β-dependent scales.

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