Using the Ponce de Leon background metric, which describes a 5D universe in an apparent vacuum: GˉAB=0, we study the effective 4D evolution of both, the inflaton and gauge-invariant scalar metric fluctuations, in the recently introduced model of space time matter inflation.
@article{arxiv.gr-qc/0605090,
title = {Scalar Metric fluctuations in space time matter inflation},
author = {Mariano Anabitarte and Mauricio Bellini},
journal= {arXiv preprint arXiv:gr-qc/0605090},
year = {2014}
}