Dante Paz

Nothing but Voids: Digging for Fossil Clues in Cosmic Emptiness

 

In this talk, we examine the statistical properties of voids across a range of cosmological simulations. Our analysis focuses on how void shapes and their abundance vary with key cosmological parameters, including matter density, σ8, hubble parameter among others, within the ΛCDM framework. Beyond standard cosmology, we extend our study to modified gravity scenarios, specifically the chameleon-screened Hu-Sawicki f(R)f(R) model and the normal-branch Dvali-Gabadadze-Porrati (nDGP) model, assessing their impact on void statistics. We evaluate the potential of void-based observables in constraining cosmological parameters through redshift surveys. This approach provides new perspectives on the relationship between void properties and fundamental physics, offering potential signatures of deviations from General Relativity.

 

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Nothing but Voids: Digging for Fossil Clues in Cosmic Emptiness

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