Frasca, M.; Liberati, R.M.; Rossi, M. Warping Effects in Strongly Perturbed Metrics. Physics2020, 2, 665-678.
Frasca, M.; Liberati, R.M.; Rossi, M. Warping Effects in Strongly Perturbed Metrics. Physics 2020, 2, 665-678.
A technique devised some years ago permits to study a theory in a regime of strong perturbations. This translate into a gradient expansion that, at the leading order, can recover the BKL solution. We solve exactly the leading order equations in a spherical symmetric case and we show that the 4-velocity in such a case is multiplied by an exponential warp factor when the perturbation is properly applied. This factor is always greater than one. We will give a closed form solution of this factor for a simple case. Some numerical examples are also given.
General relativity; Schwarzschild solution; Warp factor
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