
Simon Saunders (ed.)
et al.
Published online:
01 September 2010
Published in print:
24 June 2010
Online ISBN:
9780191721380
Print ISBN:
9780199560561
Contents
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ABSTRACT ABSTRACT
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1 INTRODUCTION 1 INTRODUCTION
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1.1 The MWI: What it is and What it isn't 1.1 The MWI: What it is and What it isn't
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1.2 Many Worlds Galore 1.2 Many Worlds Galore
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2 LEVEL I: REGIONS BEYOND OUR COSMIC HORIZON 2 LEVEL I: REGIONS BEYOND OUR COSMIC HORIZON
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2.1 Evidence for Level I Parallel Universes 2.1 Evidence for Level I Parallel Universes
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2.2 What Are Level I Parallel Universes Like? 2.2 What Are Level I Parallel Universes Like?
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2.3 How to Derive Probabilities From a Causal Theory? 2.3 How to Derive Probabilities From a Causal Theory?
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2.4 How a Multiverse Theory Can be Tested and Falsified 2.4 How a Multiverse Theory Can be Tested and Falsified
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3 Level II: Other Post‐inflation Bubbles 3 Level II: Other Post‐inflation Bubbles
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3.1 Evidence for Level II Parallel Universes 3.1 Evidence for Level II Parallel Universes
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3.2 Fine‐tuning and Selection Effects 3.2 Fine‐tuning and Selection Effects
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4 LEVEL III: THE MANY WORLDS OF QUANTUM PHYSICS 4 LEVEL III: THE MANY WORLDS OF QUANTUM PHYSICS
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4.1 What are Level III Parallel Universes Like? 4.1 What are Level III Parallel Universes Like?
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4.2 Level III Parallel Universes: Evidence and Implications 4.2 Level III Parallel Universes: Evidence and Implications
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4.3 The Unequal Probability Worry 4.3 The Unequal Probability Worry
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4.4 Does the State Describe the World or my Knowledge of it? 4.4 Does the State Describe the World or my Knowledge of it?
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4.5 The Weirdness Worry 4.5 The Weirdness Worry
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4.6 Two Worldviews 4.6 Two Worldviews
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5 LEVEL IV: OTHER MATHEMATICAL STRUCTURES 5 LEVEL IV: OTHER MATHEMATICAL STRUCTURES
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6 DISCUSSION 6 DISCUSSION
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6.1 THE MULTIVERSE HIERARCHY 6.1 THE MULTIVERSE HIERARCHY
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6.2 Are Parallel Universes Wasteful? 6.2 Are Parallel Universes Wasteful?
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6.3 Are Parallel Universes Testable? 6.3 Are Parallel Universes Testable?
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6.4 So was Everett Right? 6.4 So was Everett Right?
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Acknowledgments Acknowledgments
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References References
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Cite
Tegmark, Max, 'Many Worlds in Context', in Simon Saunders, and others (eds), Many Worlds? Everett, Quantum Theory, and Reality (Oxford , 2010; online edn, Oxford Academic, 1 Sept. 2010), https://doi.org/10.1093/acprof:oso/9780199560561.003.0023, accessed 3 May 2025.
Abstract
This chapter discusses Everett's many worlds interpretation of quantum mechanics in the context of other physics disputes and other proposed kinds of parallel universes. It finds that only a small fraction of the usual objections to Everett's theory are specific to quantum mechanics, and that all of the most controversial issues crop up also in settings that have nothing to do with quantum mechanics.
Keywords:
parallel universe, probability, Born rule, cosmology, inflation, bubble, landscape, multiverse, Wheeler, levels
Collection:
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