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

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

1 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

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

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

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

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

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

7 Relativistic Spherical Collapse For perfect fluids: LinearNonlinear

8 Relativistic Spherical Collapse For quintessence

9 Relativistic Spherical Collapse For Dark Matter in EdS For small scales

10 Relativistic Spherical Collapse Dark Matter evolution in EdS

11 Thanks This work is supported by FAPESP


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