Cosmological Effective Hamiltonian from full Loop Quantum Gravity Dynamics
General Relativity and Quantum Cosmology
2018-09-17 v3 High Energy Physics - Lattice
High Energy Physics - Theory
Abstract
The concept of effective dynamics has proven successful in LQC, a loop-inspired quantization of cosmological spacetimes. We apply the same idea of its derivation in LQC to the full theory, by computing the expectation value of the scalar constraint with respect to some coherent states peaked on the phase-space variables of flat Robertson-Walker spacetime. We comment on the relation with effective LQC and find a deviation stemming from the Lorentzian part of the Hamiltonian.
Cite
@article{arxiv.1706.09833,
title = {Cosmological Effective Hamiltonian from full Loop Quantum Gravity Dynamics},
author = {Andrea Dapor and Klaus Liegener},
journal= {arXiv preprint arXiv:1706.09833},
year = {2018}
}
Comments
5 pages, 1 figure. Accepted version in PLB