English

Spectra of geometric operators in three-dimensional LQG: From discrete to continuous

General Relativity and Quantum Cosmology 2014-05-07 v1 High Energy Physics - Theory

Abstract

We study and compare the spectra of geometric operators (length and area) in the quantum kinematics of two formulations of three-dimensional Lorentzian loop quantum gravity. In the SU(2) Ashtekar-Barbero framework, the spectra are discrete and depend on the Barbero-Immirzi parameter γ\gamma exactly like in the four-dimensional case. However, we show that when working with the self-dual variables and imposing the reality conditions the spectra become continuous and γ\gamma-independent.

Keywords

Cite

@article{arxiv.1306.3246,
  title  = {Spectra of geometric operators in three-dimensional LQG: From discrete to continuous},
  author = {Jibril Ben Achour and Marc Geiller and Karim Noui and Chao Yu},
  journal= {arXiv preprint arXiv:1306.3246},
  year   = {2014}
}

Comments

13 pages. 2 figures