Gravity, geometry and the quantum

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

30 Citations (Scopus)

Abstract

After a brief introduction, basic ideas of the quantum Riemannian geometry underlying loop quantum gravity are summarized. To illustrate physical ramifications of quantum geometry, the framework is then applied to homogeneous isotropic cosmology. Quantum geometry effects are shown to replace the big bang by a big bounce. Thus, quantum physics does not stop at the big-bang singularity. Rather there is a pre-big-bang branch joined to the current post-big-bang branch by a 'quantum bridge'. Furthermore, thanks to the background independence of loop quantum gravity, evolution is deterministic across the bridge.

Original languageEnglish (US)
Title of host publicationAlbert Einstein Century International Conference
Pages3-13
Number of pages11
DOIs
StatePublished - Dec 1 2006
EventAlbert Einstein Century International Conference - Paris, France
Duration: Jul 18 2005Jul 22 2005

Publication series

NameAIP Conference Proceedings
Volume861
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherAlbert Einstein Century International Conference
CountryFrance
CityParis
Period7/18/057/22/05

Fingerprint

gravitation
geometry
cosmology
physics

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • Physics and Astronomy(all)
  • Nature and Landscape Conservation

Cite this

Ashtekar, A. (2006). Gravity, geometry and the quantum. In Albert Einstein Century International Conference (pp. 3-13). (AIP Conference Proceedings; Vol. 861). https://doi.org/10.1063/1.2399563
Ashtekar, Abhay. / Gravity, geometry and the quantum. Albert Einstein Century International Conference. 2006. pp. 3-13 (AIP Conference Proceedings).
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Ashtekar, A 2006, Gravity, geometry and the quantum. in Albert Einstein Century International Conference. AIP Conference Proceedings, vol. 861, pp. 3-13, Albert Einstein Century International Conference, Paris, France, 7/18/05. https://doi.org/10.1063/1.2399563

Gravity, geometry and the quantum. / Ashtekar, Abhay.

Albert Einstein Century International Conference. 2006. p. 3-13 (AIP Conference Proceedings; Vol. 861).

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

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Ashtekar A. Gravity, geometry and the quantum. In Albert Einstein Century International Conference. 2006. p. 3-13. (AIP Conference Proceedings). https://doi.org/10.1063/1.2399563