Why We're Exponents Of Quantifying Large-scale Structure With The Log-density

Details Why We're Exponents Of Quantifying Large-scale Structure With The Log-density Why We're Exponents Of Quantifying Large-scale Structure With The Log-density

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21931207n&link_type=abstract

American Astronomical Society, AAS Meeting #219, #312.07

Mathematics

Logic

Scientific paper

I will discuss some reasons why the log-density should be used instead of the conventional overdensity to quantify the large-scale structure of the Universe. To some approximation, structure formation is an exponential mapping from the initial Gaussian field. Also practically, cosmological-parameter constraints from the matter log-density power spectrum than the conventional matter power spectrum.

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