L
L. Raul Abramo
Researcher at University of São Paulo
Publications - 73
Citations - 2243
L. Raul Abramo is an academic researcher from University of São Paulo. The author has contributed to research in topics: Redshift & Dark matter. The author has an hindex of 22, co-authored 60 publications receiving 2012 citations. Previous affiliations of L. Raul Abramo include Brown University & University of Pennsylvania.
Papers
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Backreaction problem for cosmological perturbations
TL;DR: In this paper, the authors derived the effective energy-momentum tensor for cosmological perturbations and proved its gauge-invariance and applied it to study the influence of perturbation on the behavior of the Friedmann background in inflationary universe scenarios.
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Energy-momentum tensor for cosmological perturbations
TL;DR: In this article, the effective energy-momentum tensor (EMT) for cosmological perturbations and the back-reaction problem were formulated in a gauge-invariant manner.
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Cosmological dynamics of the tachyon with an inverse power-law potential
L. Raul Abramo,Fabio Finelli +1 more
TL;DR: In this article, the authors investigate tachyon dynamics with an inverse power-law potential V (φ)∝φ−α and find global attractors of the dynamics leading to a dust behavior for α > 2 and to an accellerating universe for 0 <α≤ 2.
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Signature of the interaction between dark energy and dark matter in galaxy clusters
TL;DR: In this article, the influence of an interaction between dark energy and dark matter on the dynamics of galaxy clusters was investigated, and the Layser-Irvine equation was obtained in the presence of interactions.
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Signature of the interaction between dark energy and dark matter in observations
TL;DR: In this paper, the Layser-Irvine equation was modified to include the dark interactions and the effect of dark energy and dark matter on the dynamics of galaxy clusters was investigated.