Conflict between some higher-order curvature invariant terms
General Relativity and Quantum Cosmology
2021-10-27 v3 Cosmology and Nongalactic Astrophysics
Abstract
A viable quantum theory does not allow curvature invariant terms of different higher orders to be accommodated in the gravitational action. We show that there is indeed a conflict between the curvature squared and Gauss-Bonnet squared terms from the point of view of hermiticity. This means one should choose either, in addition to the Einstein-Hilbert term, but never the two together. We explore early cosmic evolution with Gauss-Bonnet squared term.
Keywords
Cite
@article{arxiv.2106.06740,
title = {Conflict between some higher-order curvature invariant terms},
author = {Dalia Saha and Mohosin Alam and Ranajit Mandal and Abhik Kumar Sanyal},
journal= {arXiv preprint arXiv:2106.06740},
year = {2021}
}
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18 pages, 0 figures