Chapter

Phenomenology, decoherence, and the arrow of time

Claus Kiefer

in Quantum Gravity

Published in print April 2012 | ISBN: 9780199585205
Published online May 2012 | e-ISBN: 9780191739378 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199585205.003.0010

Series: International Series of Monographs on Physics

Phenomenology, decoherence, and the arrow of time

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This final chapter starts with a brief review of quantum-gravity phenomenology. It then focuses on an important conceptual issue – the relevance of quantum gravity for the general interpretation of quantum theory. A central part is devoted to the discussion of the quantum-to-classical transition, with decoherence as its crucial mechanism. It is shown that the quantum states used in cosmology can be interpreted in a sensible way. The chapter also contains a discussion of the arrow of time in the light of quantum cosmology and ends with a brief outlook and reflections.

Keywords: Quantum-gravity phenomenology; interpretation; quantum universe; decoherence; Everett interpretation; primordial fluctuations; arrow of time; reflections

Chapter.  13002 words.  Illustrated.

Subjects: Mathematical and Statistical Physics

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