Loop quantum cosmology, space-time structure, and falsifiability

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Loop quantum cosmology attempts to understand the full dynamics of loop quantum gravity by realizing crucial effects in simpler, usually symmetric settings. Several subtleties arise especially when cosmological questions are to be addressed, related to possible mini-superspace artefacts, consistent cosmological perturbation theory, and quantum space-time structure. Recent work on inhomogeneous perturbations has highlighted some of the dangers of an over-reliance on simple models, sometimes not just reduced by symmetry but also in the possible forms of matter or quantum corrections. Only a consistent treatment of inhomogeneity, taking into account the full gauge structure related to general covariance, can show what happens at high densities in quantum gravity. The relevant methods and results (especially effective equations, potential observational signatures, singularity resolution and signature change) are surveyed in here.

Original languageEnglish (US)
Title of host publicationQuantum Gravity and Quantum Cosmology
EditorsGianluca Calcagni, George Siopsis, Lefteris Papantonopoulos, Nikos Tsamis
PublisherSpringer New York LLC
Pages149-184
Number of pages36
ISBN (Print)9783642330353
DOIs
Publication statusPublished - Jan 1 2013
Event6th Aegean School on Quantum Gravity and Quantum Cosmology, 2011 - Chora on Naxos Island, Greece
Duration: Sep 12 2011Sep 17 2011

Publication series

NameSpringer Proceedings in Mathematics and Statistics
Volume863
ISSN (Print)2194-1009
ISSN (Electronic)2194-1017

Other

Other6th Aegean School on Quantum Gravity and Quantum Cosmology, 2011
CountryGreece
CityChora on Naxos Island
Period9/12/119/17/11

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Mathematics(all)

Cite this

Bojowald, M. (2013). Loop quantum cosmology, space-time structure, and falsifiability. In G. Calcagni, G. Siopsis, L. Papantonopoulos, & N. Tsamis (Eds.), Quantum Gravity and Quantum Cosmology (pp. 149-184). (Springer Proceedings in Mathematics and Statistics; Vol. 863). Springer New York LLC. https://doi.org/10.1007/978-3-642-33036-0_7