Published July 21, 2005
| Version v1
Journal article
Background independence in a nutshell: the dynamics of a tetrahedron
Creators
- 1. Dipartimento di Fisica dell'Universita 'La Sapienza', INFN Sez. Roma1, I-00185 Rome (Italy)
- 2. Centre de Physique Theorique de Luminy, Universite de la Mediterranee, F-13288 Marseille (France)
- 3. Dipartimento di Fisica dell'Universita di Torino, INFN Sez. Torino, I-10125 Torino (Italy)
- 4. Centre for Gravity and Geometry, Penn State University, University Park, PA 16802 (United States)
Description
We study how physical information can be extracted from a background-independent quantum system. We use an extremely simple 'minimalist' system that models a finite region of 3D Euclidean quantum spacetime with a single equilateral tetrahedron. We show that the physical information can be expressed as a boundary amplitude. We illustrate how the notions of 'evolution' in a boundary proper time and 'vacuum' can be extracted from the background-independent dynamics
Availability note (English)
Available online at http://stacks.iop.org/0264-9381/22/2971/cqg5_14_008.pdf or at the Web site for the journal Classical and Quantum Gravity (ISSN 1361-6382) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0264-9381/22/2971/cqg5_14_008.pdf; http://www.iop.org/;
- DOI
- 10.1088/0264-9381/22/14/008;
- PII
- S0264-9381(05)94075-6;
Publishing Information
- Journal Title
- Classical and Quantum Gravity
- Journal Volume
- 22
- Journal Issue
- 14
- Journal Page Range
- p. 2971-2989
- ISSN
- 0264-9381
- CODEN
- CQGRDG
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36101530
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- AMPLITUDES; EUCLIDEAN SPACE; EVOLUTION; INFORMATION; QUANTUM GRAVITY; SPACE-TIME
- Descriptors DEC
- FIELD THEORIES; MATHEMATICAL SPACE; QUANTUM FIELD THEORY; RIEMANN SPACE; SPACE