Pith. sign in

REVIEW 1 cited by

Loop quantum gravity and cosmological constant

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2101.07527 v2 pith:HAFAUJKQ submitted 2021-01-19 gr-qc astro-ph.COhep-th

Xiangdong Zhang , Gaoping Long , Yongge Ma This is my paper · ORCID
classification gr-qcastro-ph.COhep-th
keywords quantumconstantgravityloopregularizationbouncebranchcases
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

An one-parameter regularization freedom of the Hamiltonian constraint for loop quantum gravity is analyzed. The corresponding spatially flat, homogenous and isotropic model includes the two well-known models of loop quantum cosmology as special cases. The quantum bounce nature is tenable in the generalized cases. For positive value of the regularization parameter, the effective Hamiltonian leads to an asymptotic de-Sitter branch of the Universe connecting to the standard Friedmann branch by the quantum bounce. Remarkably, by suitably choosing the value of the regularization parameter, the observational cosmological constant can emerge at large volume limit from the effect of quantum gravity, and the effective Newtonian constant satisfies the experimental restrictions in the meantime.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Unitary evolution and cosmic acceleration in Loop Quantum Cosmology

    gr-qc 2024-12 conditional novelty 5.0 of 10

    For any weight parameter in the improved-dynamics LQC Hamiltonian, negative weights give essentially self-adjoint operators, while positive weights require U(1)-labeled self-adjoint extensions, which the paper impleme...

Pith tools