103 citations · 236 across the 3 of their papers we have counts for
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hep-th2006★ 103 cited
A non inflationary model with scale invariant cosmological perturbations
Patrick Peter, E. J. C. Pinho, Nelson Pinto-Neto
We show that a contracting universe which bounces due to quantum cosmological effects and connects to the hot big-bang expansion phase, can produce an almost scale invariant spectr…
hep-th2006★ 92 cited
Scalar and Vector Perturbations in Quantum Cosmological Backgrounds
Emanuel J. C. Pinho, Nelson Pinto-Neto
Generalizing a previous work concerning cosmological linear tensor perturbations, we show that the lagrangians and hamiltonians of cosmological linear scalar and vector perturbatio…