Gravity models with nonlinear symmetry realization
General Relativity and Quantum Cosmology
2021-12-23 v1
Abstract
Three models with nonlinear realizations of conformal symmetry are discussed. The simplest model can only describe a universe expanding with a deceleration and does not include inflation. The other models are equivalent up to a variables reparametrization. All these models contain ghost degrees of freedom which may be excluded with an additional symmetry of the target space.
Keywords
Cite
@article{arxiv.2110.03377,
title = {Gravity models with nonlinear symmetry realization},
author = {Stanislav Alexeyev and Daniil Krichevskiy and Boris Latosh},
journal= {arXiv preprint arXiv:2110.03377},
year = {2021}
}