de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Disclaimer Contact us Login
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Discrete Gravity Models and Loop Quantum Gravity: a Short Review

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons25985

Ryan,  James P.
Canonical and Covariant Dynamics of Quantum Gravity, AEI Golm, MPI for Gravitational Physics, Max Planck Society;

Locator
There are no locators available
Fulltext (public)

1204.5394
(Preprint), 690KB

sigma12-052.pdf
(Any fulltext), 643KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Dupuis, M., Ryan, J. P., & Speziale, S. (2012). Discrete Gravity Models and Loop Quantum Gravity: a Short Review. Symmetry, Integrability and Geometry: Methods and Applications (SIGMA), 8: 052. doi:10.3842/SIGMA.2012.052.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-EB18-4
Abstract
We review the relation between Loop Quantum Gravity on a fixed graph and discrete models of gravity. We compare Regge and twisted geometries, and discuss discrete actions based on twisted geometries and on the discretization of the Plebanski action. We discuss the role of discrete geometries in the spin foam formalism, with particular attention to the definition of the simplicity constraints.