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arXiv · 1901.00805

Novel couplings between nonmetricity and matter

Francisco S. N. Lobo·Tiberiu Harko·Tomi S. Koivisto·Gonzalo J. Olmo·Diego Rubiera-Garcia
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Abstract

We present a novel theory of gravity, namely, an extension of symmetric teleparallel gravity. This is done by introducing a new class of theories where the nonmetricity $Q$ is coupled nonminimally to the matter Lagrangian. This nonminimal coupling entails the nonconservation of the energy-momentum tensor, and consequently the appearance of an extra force. We also present several cosmological applications.

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Francisco S. N. Lobo, Tiberiu Harko, Tomi S. Koivisto, Gonzalo J. Olmo, Diego Rubiera-Garcia. 2019-01-03. Novel couplings between nonmetricity and matter. https://arxiv.org/abs/1901.00805

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