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  2-point functions in quantum cosmology

Gielen, S. (2012). 2-point functions in quantum cosmology. Journal of Physics: Conference Series, 360: 012029.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-312C-4 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-312E-F
Genre: Conference Paper

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1108.6059 (Preprint), 113KB
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 Creators:
Gielen, Steffen1, Author              
Affiliations:
1Microscopic Quantum Structure & Dynamics of Spacetime, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_persistent22              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Theory, hep-th
 Abstract: We discuss the path-integral formulation of quantum cosmology with a massless scalar field as a sum-over-histories, with particular reference to loop quantum cosmology. Exploiting the analogy with the relativistic particle, we give a complete overview of the possible two-point functions, deriving vertex expansions and composition laws they satisfy. We clarify the tie between definitions using a group averaging procedure and those in a deparametrised framework. We draw some conclusions about the physics of a single quantum universe and multiverse field theories where the role of these sectors and the inner product are reinterpreted.

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 Dates: 2011-08-3020112012
 Publication Status: Published in print
 Pages: 4 pages, based on a talk given at Loops '11, Madrid, to appear in Journal of Physics: Conference Series (JPCS)
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1108.6059
DOI: 10.1088/1742-6596/360/1/012029
 Degree: -

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Title: Loops 11: Non-Perturbative / Background Independent Quantum Gravity
Place of Event: Madrid
Start-/End Date: 2011-05-23 - 2011-05-28

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Title: Journal of Physics: Conference Series
Source Genre: Journal
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Publ. Info: Bristol : IOP Publ.
Pages: - Volume / Issue: 360 Sequence Number: 012029 Start / End Page: - Identifier: ISSN: 1742-6588
CoNE: /journals/resource/111097776606042