pith. machine review for the scientific record. sign in

arxiv: gr-qc/0102069 · v1 · submitted 2001-02-14 · 🌀 gr-qc · hep-th

Recognition: unknown

Absence of Singularity in Loop Quantum Cosmology

Martin Bojowald
Authors on Pith no claims yet
classification 🌀 gr-qc hep-th
keywords quantumsingularityclassicalgeometryvolumeabsencealreadyanalysis
0
0 comments X
read the original abstract

It is shown that the cosmological singularity in isotropic minisuperspaces is naturally removed by quantum geometry. Already at the kinematical level, this is indicated by the fact that the inverse scale factor is represented by a bounded operator even though the classical quantity diverges at the initial singularity. The full demonstation comes from an analysis of quantum dynamics. Because of quantum geometry, the quantum evolution occurs in discrete time steps and does not break down when the volume becomes zero. Instead, space-time can be extended to a branch preceding the classical singularity independently of the matter coupled to the model. For large volume the correct semiclassical behavior is obtained.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 4 Pith papers

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

  1. Effective Improved-GUP Cosmology: Emergent FLRW Universe without a Bounce

    gr-qc 2026-04 unverdicted novelty 6.0

    Improved GUP deformations applied to FLRW cosmology with Ashtekar-Barbero variables produce a non-singular emergent universe coasting from constant volume without a bounce and with a universal maximum energy density.

  2. Relational quantum dynamics of the black hole interior: singularity resolution and quantum bounce

    gr-qc 2026-05 unverdicted novelty 5.0

    Relational quantization of the Schwarzschild black hole interior resolves the singularity with a quantum bounce, finite Kretschmann scalar, bounded area, and black-hole-to-white-hole transition.

  3. Chaos and epoch structure in the deformed Mixmaster universe

    gr-qc 2026-05 unverdicted novelty 4.0

    GUP deformation shortens Kasner epochs in the Mixmaster universe while polymerization lengthens them, with combined effects adding linearly and chaos strength depending on the deformation parameters.

  4. Assessing EMRI Detectability of the Rotating Quantum Oppenheimer-Snyder Black Hole

    gr-qc 2026-04 unverdicted novelty 4.0

    Quantum corrections in rotating black holes produce detectable but spin-suppressed gravitational wave phase shifts in LISA EMRIs.