Modified Einstein equations from the 1-loop effective action of the IKKT model

Autor(en)

Kaushlendra Kumar, Harold C. Steinacker

Abstrakt

We derive the equations of motion that arise from the one-loop effective action for the geometry of 3+1 dimensional quantum branes in the IKKT matrix model. These equations are cast into the form of generalized Einstein equations, with extra contributions from dilaton and axionic fields, as well as a novel anharmonicity tensor Cµν capturing the classical Yang-Mills-type action. The resulting gravity theory approximately reduces to general relativity in some regime, but differs significantly at cosmic scales, leading to an asymptotically flat Friedmann-Lemaître-Robertson-Walker cosmological evolution governed by the classical action.

Organisation(en)

Mathematische Physik

Externe Organisation(en)

Gottfried Wilhelm Leibniz Universität Hannover, Erwin Schrödinger Institut

Journal

Classical and Quantum Gravity

Band

41

Anzahl der Seiten

24

ISSN

0264-9381

DOI

https://doi.org/10.48550/arXiv.2312.01317

Publikationsdatum

09-2024

Peer-reviewed

Ja

ÖFOS 2012

103012 Hochenergiephysik, 103028 Relativitätstheorie

Schlagwörter

ASJC Scopus Sachgebiete

Physics and Astronomy (miscellaneous)

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/96132482-9fe8-4c1d-83a3-480aa962e5a5