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SIGMA, 2016, Volume 12, 082, 49 pages
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This article is cited in 43 scientific papers (total in 43 papers)
Quantum Cosmology from Group Field Theory Condensates: a Review
Steffen Gielena, Lorenzo Sindonib
a Theoretical Physics, Blackett Laboratory, Imperial College London, London SW7 2AZ, UK
b Max Planck Institute for Gravitational Physics, Am Mühlenberg 1, 14476 Golm, Germany
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.
Keywords:
group field theory; quantum cosmology; loop quantum gravity.
| Funding Agency |
Grant Number |
European Union's Seventh Framework Programme  |
REA-622339 |
| John Templeton Foundation |
PS-GRAV/1401 |
| The research leading to these results has received funding from the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant agreement n. 622339 and from the John Templeton Foundation through the grant PS-GRAV/1401. |
DOI:
https://doi.org/10.3842/SIGMA.2016.082
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ArXiv:
1602.08104
MSC: 83C45; 83C27; 83F05; 81T27
Received: February 29, 2016; in final form August 12, 2016; Published online August 18, 2016
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Citation:
Steffen Gielen, Lorenzo Sindoni, “Quantum Cosmology from Group Field Theory Condensates: a Review”, SIGMA, 12 (2016), 082, 49 pp.
Citation in format AMSBIB
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