A note on the analogy between superfluids and cosmology
Other Condensed Matter
2013-01-17 v2
Abstract
A new analogy between superfluid systems and cosmology is here presented, which relies strongly on the following ingredient: the back-reaction of the vacuum to the quanta of sound waves. We show how the presence of thermal phonons, the excitations above the quantum vacuum for , enable us to deduce an hydrodynamical equation formally similar to the one obtained for a perfect fluid in a Universe obeying the Friedmann-Robertson-Walker metric.
Cite
@article{arxiv.0910.0790,
title = {A note on the analogy between superfluids and cosmology},
author = {A. Naddeo and G. Scelza},
journal= {arXiv preprint arXiv:0910.0790},
year = {2013}
}
Comments
Accepted for publication in Modern Physics Letters B