Modeling nonlinear dark energy fluctuations Ronaldo Carlotto Batista IF-USP Raul Abramo, Rogério Rosenfeld, Lamartine Liberato I Workshop: Challanges of.

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Modeling nonlinear dark energy fluctuations Ronaldo Carlotto Batista IF-USP Raul Abramo, Rogério Rosenfeld, Lamartine Liberato I Workshop: Challanges of New Physics in the Space Campos do Jordão, 30/04/2009

Dark Energy Models Cosmological Constant Canonical Scalar Field Perfect Fluid e.g. Chaplygin Gas K-essence e.g. Tachyon, Born-Infeld

Dark Energy Linear Perturbations For quintessence Order of Hubble radius ~ Gpc Hwang & Noh 2001

Spherical Collapse with DE fluctuations Mota & van de Bruck 2004 For quintessence:

Spherical Collapse with DE fluctuations Lima et. al Pseudo-newtonian Cosmology

Linear Comparison PN - GR PRD arxiv With pressure gradient Spherical Collapse App.

Relativistic Spherical Collapse For perfect fluids: LinearNonlinear

Relativistic Spherical Collapse For quintessence

Relativistic Spherical Collapse For Dark Matter in EdS For small scales

Relativistic Spherical Collapse Dark Matter evolution in EdS

Thanks This work is supported by FAPESP

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