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Quantum reduced loop gravity: Semiclassical limit

ALESCI, Emanuele
•
Cianfrani F.
2014
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
We discuss the semiclassical limit of quantum reduced loop gravity, a recently proposed model to address the quantum dynamics of the early Universe. We apply loop quantum gravity (LQG) techniques in order to define the semiclassical states in the kinematical Hilbert space and we demonstrate that the expectation value of the euclidean scalar constraint coincides with the classical expression, i.e., one of the local Bianchi I dynamics. The result holds as a leading order expansion in the scale factors of the Universe and opens the way to study the subleading corrections to the semiclassical dynamics. We outline how by retaining a suitable finite coordinate length for holonomies that our effective Hamiltonian at the leading order coincides with the one expected from loop quantum cosmology (LQC). This result is an important step in fixing the correspondence between LQG and LQC.
DOI
10.1103/PhysRevD.90.024006
WOS
WOS:000342429400012
Archivio
http://hdl.handle.net/20.500.11767/32580
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84903641564
https://arxiv.org/abs/1402.3155
http://inspirehep.net/record/1281222
http://cdsads.u-strasbg.fr/abs/2014PhRvD..90b4006A
Diritti
metadata only access
Soggetti
  • COHERENT STATES GCS

  • HAMILTONIAN CONSTRAIN...

  • GENERAL-RELATIVITY

  • MASTER CONSTRAINT

  • MATRIX-ELEMENTS

  • SPIN DYNAMICS

  • AQG

  • COSMOLOGY

  • Settore FIS/05 - Astr...

Scopus© citazioni
33
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
36
Data di acquisizione
Mar 27, 2024
Visualizzazioni
7
Data di acquisizione
Apr 19, 2024
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