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  Generalized quantum gravity condensates for homogeneous geometries and cosmology

Oriti, D., Pranzetti, D., Ryan, J. P., & Sindoni, L. (2015). Generalized quantum gravity condensates for homogeneous geometries and cosmology. Classical and quantum gravity, 32(23): 235016. doi:10.1088/0264-9381/32/23/235016.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-A68D-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-99E7-D
Genre: Journal Article

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 Creators:
Oriti, Daniele1, Author              
Pranzetti, Daniele1, Author              
Ryan, James P.2, Author              
Sindoni, Lorenzo1, Author              
Affiliations:
1Microscopic Quantum Structure & Dynamics of Spacetime, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_67201              
2Canonical and Covariant Dynamics of Quantum Gravity, AEI Golm, MPI for Gravitational Physics, Max Planck Society, ou_102878              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: We construct a generalized class of quantum gravity condensate states, that allows the description of continuum homogeneous quantum geometries within the full theory. They are based on similar ideas already applied to extract effective cosmological dynamics from the group field theory formalism, and thus also from loop quantum gravity. However, they represent an improvement over the simplest condensates used in the literature, in that they are defined by an infinite superposition of graph-based states encoding in a precise way the topology of the spatial manifold. The construction is based on the definition of refinement operators on spin network states, written in a second quantized language. The construction lends itself easily to be applied also to the case of spherically symmetric quantum geometries.

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 Dates: 2015-01-052015
 Publication Status: Published in print
 Pages: 33 pages, 6 figures
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 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1501.00936
DOI: 10.1088/0264-9381/32/23/235016
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Title: Classical and quantum gravity
Source Genre: Journal
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Publ. Info: Bristol, U.K. : Institute of Physics
Pages: - Volume / Issue: 32 (23) Sequence Number: 235016 Start / End Page: - Identifier: ISSN: 0264-9381
CoNE: /journals/resource/954925513480_1