Loop quantum gravity as an effective theory

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

1 Citation (Scopus)

Abstract

As a canonical and generally covariant gauge theory, loop quantum gravity requires special techniques to derive effective actions or equations. If the proper constructions are taken into account, the theory, in spite of considerable ambiguities at the dynamical level, allows for a meaningful phenomenology to be developed, by which it becomes falsifiable. The traditional problems plaguing canonical quantum-gravity theories, such as the anomaly issue or the problem of time, can be overcome or are irrelevant at the effective level, resulting in consistent means of physical evaluations. This contribution presents aspects of canonical equations and related notions of (deformed) space-time structures and discusses implications in loop quantum gravity, such as signature change at high density from holonomy corrections, and falsifiability thanks to inversetriad corrections.

Original languageEnglish (US)
Title of host publicationSixth International School on Field Theory and Gravitation-2012
Pages5-30
Number of pages26
DOIs
StatePublished - Dec 1 2012
Event6th International School on Field Theory and Gravitation-2012, ISFTG 2012 - Petropolis - RJ, Brazil
Duration: Apr 23 2012Apr 27 2012

Publication series

NameAIP Conference Proceedings
Volume1483
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other6th International School on Field Theory and Gravitation-2012, ISFTG 2012
CountryBrazil
CityPetropolis - RJ
Period4/23/124/27/12

Fingerprint

gravitation
phenomenology
ambiguity
gauge theory
signatures
anomalies
evaluation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Bojowald, M. (2012). Loop quantum gravity as an effective theory. In Sixth International School on Field Theory and Gravitation-2012 (pp. 5-30). (AIP Conference Proceedings; Vol. 1483). https://doi.org/10.1063/1.4756960
Bojowald, Martin. / Loop quantum gravity as an effective theory. Sixth International School on Field Theory and Gravitation-2012. 2012. pp. 5-30 (AIP Conference Proceedings).
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Bojowald, M 2012, Loop quantum gravity as an effective theory. in Sixth International School on Field Theory and Gravitation-2012. AIP Conference Proceedings, vol. 1483, pp. 5-30, 6th International School on Field Theory and Gravitation-2012, ISFTG 2012, Petropolis - RJ, Brazil, 4/23/12. https://doi.org/10.1063/1.4756960

Loop quantum gravity as an effective theory. / Bojowald, Martin.

Sixth International School on Field Theory and Gravitation-2012. 2012. p. 5-30 (AIP Conference Proceedings; Vol. 1483).

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

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Bojowald M. Loop quantum gravity as an effective theory. In Sixth International School on Field Theory and Gravitation-2012. 2012. p. 5-30. (AIP Conference Proceedings). https://doi.org/10.1063/1.4756960