Die u:cris Detailansicht:
Emergent gravity on covariant quantum spaces in the IKKT model
- Autor(en)
- Harold C. Steinacker
- Abstrakt
We study perturbations of 4-dimensional fuzzy spheres as backgrounds in the IKKT or IIB matrix model. Gauge fields and metric fluctuations are identified among the excitation modes with lowest spin, supplemented by a tower of higher-spin fields. They arise from an internal structure which can be viewed as a twisted bundle over $S^4$, leading to a covariant noncommutative geometry. The linearized 4-dimensional Einstein equations are obtained from the classical matrix model action under certain conditions, modified by an IR cutoff. Some one-loop contributions to the effective action are computed using the formalism of string states.
- Organisation(en)
- Mathematische Physik
- Journal
- Journal of High Energy Physics
- Band
- 2016
- Anzahl der Seiten
- 47
- ISSN
- 1029-8479
- DOI
- https://doi.org/10.1007/JHEP12(2016)156
- Publikationsdatum
- 12-2016
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103028 Relativitätstheorie, 103019 Mathematische Physik
- Schlagwörter
- ASJC Scopus Sachgebiete
- Nuclear and High Energy Physics
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/991b166b-77c5-4a10-b349-b34f7e8c7074