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Title:
Effective equations for isotropic quantum cosmology including matter
Authors:
Bojowald, Martin; Hernández, Hector; Skirzewski, Aureliano
Affiliation:
AA(Institute for Gravitation and the Cosmos, The Pennsylvania State University, 104 Davey Lab, University Park, Pennsylvania 16802, USA), AA(Universidad Autónoma de Chihuahua, Facultad de Ingeniería, Nuevo Campus Universitario, Chihuahua 31125, Mexico), AA(Centro de Física Fundamental, Universidad de los Andes, Mérida 5101, Venezuela)
Publication:
Physical Review D, vol. 76, Issue 6, id. 063511 (PhRvD Homepage)
Publication Date:
09/2007
Origin:
APS
PACS Keywords:
Quantum cosmology, Semiclassical theories and applications, Loop quantum gravity, quantum geometry, spin foams
DOI:
10.1103/PhysRevD.76.063511
Bibliographic Code:
2007PhRvD..76f3511B

Abstract

Effective equations often provide powerful tools to develop a systematic understanding of detailed properties of a quantum system. This is especially helpful in quantum cosmology where several conceptual and technical difficulties associated with the full quantum equations can be avoided in this way. Here, effective equations for Wheeler-DeWitt and loop quantizations of spatially flat, isotropic cosmological models sourced by a massive or interacting scalar are derived and studied. The resulting systems are remarkably different from that given for a free, massless scalar. This has implications for the coherence of evolving states and the realization of a bounce in loop quantum cosmology.
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