Cosmic analogues of classic variational problems
General Relativity and Quantum Cosmology
2020-05-26 v1 Classical Physics
Abstract
Several classic one-dimensional problems of variational calculus originating in non-relativistic particle mechanics have solutions that are analogues of spatially homogeneous and isotropic universes. They are ruled by an equation which is formally a Friedmann equation for a suitable cosmic fluid. These problems are revisited and their cosmic analogues are pointed out. Some correspond to the main solutions of cosmology, while others are analogous to exotic cosmologies with phantom fluids and finite future singularities.
Cite
@article{arxiv.2005.12053,
title = {Cosmic analogues of classic variational problems},
author = {Valerio Faraoni},
journal= {arXiv preprint arXiv:2005.12053},
year = {2020}
}
Comments
30 pages, 3 figures. Invited paper to appear in Universe