Year: 2006
Type: conference-paper
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.
Source: AIP conference proceedings
DOI: 10.1063/1.2399563
Author: Abhay Ashtekar
Institutions: Pennsylvania State University, Utrecht University
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2245538007