One-loop effective action of the IKKT model for cosmological backgrounds

Autor(en)

Emmanuele Battista, Harold C. Steinacker

Abstrakt

We study cosmological solutions of the IKKT model with k = –1 FLWR geometry, taking into account one-loop corrections. A previously discussed covariant quantum spacetime is found to be stabilized through one-loop effects at early times, without adding a mass term to the model. At late times, this background is modified and goes through a period of acceleration, before settling down to a coasting FLRW geometry with scale parameter a(t) ~ t. This is qualitatively close to observation without any fine-tuning, irrespective of the detailed matter content of the universe.

Organisation(en)

Mathematische Physik

Journal

Journal of High Energy Physics

Band

2024

Anzahl der Seiten

32

ISSN

1029-8479

DOI

https://doi.org/10.48550/arXiv.2310.11126

Publikationsdatum

01-2024

Peer-reviewed

Ja

ÖFOS 2012

103012 Hochenergiephysik

Schlagwörter

ASJC Scopus Sachgebiete

Nuclear and High Energy Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/659a1628-badb-4190-9d12-9b1d6803d50d