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Quantum Cosmology from Group Field Theory Condensates: A Review

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Title: Quantum Cosmology from Group Field Theory Condensates: A Review
Authors: Gielen, S
Sindoni, L
Item Type: Journal Article
Abstract: We give, in some detail, a critical overview over recent work towards deriving a cosmological phenomenology from the fundamental quantum dynamics of group field theory (GFT), based on the picture of a macroscopic universe as a ''condensate'' of a large number of quanta of geometry which are given by excitations of the GFT field over a ''no-space'' vacuum. We emphasise conceptual foundations, relations to other research programmes in GFT and the wider context of loop quantum gravity (LQG), and connections to the quantum physics of real Bose-Einstein condensates. We show how to extract an effective dynamics for GFT condensates from the microscopic GFT physics, and how to compare it with predictions of more conventional quantum cosmology models, in particular loop quantum cosmology (LQC). No detailed familiarity with the GFT formalism is assumed.
Issue Date: 18-Aug-2016
Date of Acceptance: 12-Aug-2016
URI: http://hdl.handle.net/10044/1/39543
DOI: http://dx.doi.org/10.3842/SIGMA.2016.082
ISSN: 1815-0659
Publisher: Institute of Mathematics of NAS of Ukraine
Journal / Book Title: Symmetry, Integrability and Geometry: Methods and Applications
Volume: 12
Copyright Statement: © The Author(s) 2016
Sponsor/Funder: European Commission Directorate-General for Research and Innovation
Keywords: 0102 Applied Mathematics
0105 Mathematical Physics
Publication Status: Published
Open Access location: http://www.emis.de/journals/SIGMA/2016/082/sigma16-082.pdf
Article Number: 082
Appears in Collections:Physics
Theoretical Physics



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