Cosmological solutions of the non-minimally coupled Weyl connection gravity theories

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Baptista, R (Author) Other; Bertolami, O (Author) FCUP

Journal

Title: Classical and Quantum Gravity

Vol. 37

ISSN: 0264-9381

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-00R-SFE

DOI: 10.1088/1361-6382/ab7bb8

Abstract (EN): We consider a non-minimally coupled curvature-matter gravity model (NMC) with a Weyl connection, a theory referred to as non-minimally coupled Weyl connection gravity (NMCWCG). The Weyl connection is an affine connection that is not compatible with the metric, and involves a vector field. Assuming a vacuum expectation value for the vector field and a matter Lagrangian that only contains the contributions of the vacuum energy, we show that the model admits solutions in the space-form with a reference curvature that can be fine-tuned to be much smaller than the contribution of the matter fields. This shows that, at least in principle, the model admits a viable cosmological description.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13