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  Disappearance and emergence of space and time in quantum gravity

Oriti, D. (2014). Disappearance and emergence of space and time in quantum gravity. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics, 46, 186-199. doi:10.1016/j.shpsb.2013.10.006.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-B4C7-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-001A-10B0-0
Genre: Journal Article

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1302.2849 (Preprint), 330KB
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 Creators:
Oriti, Daniele1, Author              
Affiliations:
1Microscopic Quantum Structure & Dynamics of Spacetime, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_67201              

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Free keywords: Physics, History of Physics, physics.hist-ph,General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Theory, hep-th
 Abstract: We discuss the hints for the disappearance of continuum space and time at microscopic scale. These include arguments for a discrete nature of them or for a fundamental non-locality, in a quantum theory of gravity. We discuss how these ideas are realized in specific quantum gravity approaches. Turning then the problem around, we consider the emergence of continuum space and time from the collective behaviour of discrete, pre-geometric atoms of quantum space, and for understanding spacetime as a kind of "condensate", and we present the case for this emergence process being the result of a phase transition, dubbed "geometrogenesis". We discuss some conceptual issues of this scenario and of the idea of emergent spacetime in general. As a concrete example, we outline the GFT framework for quantum gravity, and illustrate a tentative procedure for the emergence of spacetime in this framework. Last, we re-examine the conceptual issues raised by the emergent spacetime scenario in light of this concrete example.

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 Dates: 2013-02-1220132014
 Publication Status: Published in print
 Pages: 22 pages
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1302.2849
DOI: 10.1016/j.shpsb.2013.10.006
 Degree: -

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Title: Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics
Source Genre: Journal
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Publ. Info: Paris [etc.] : Marc Vachon [etc.]
Pages: - Volume / Issue: 46 Sequence Number: - Start / End Page: 186 - 199 Identifier: ISSN: 0044-586X
CoNE: /journals/resource/954925454931