Fundamental Physics With Large-scale Structure: Modified Gravity, Non-Gaussianity, And Gravity Waves

Details Fundamental Physics With Large-scale Structure: Modified Gravity, Non-Gaussianity, And Gravity Waves Fundamental Physics With Large-scale Structure: Modified Gravity, Non-Gaussianity, And Gravity Waves

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21944006s&link_type=abstract

American Astronomical Society, AAS Meeting #219, #440.06

Astronomy and Astrophysics

Astronomy

Scientific paper

Testing our theory of gravity, and probing the initial conditions of the Universe are two of the main goals of cosmology. I will show that large-scale structure is uniquely suited to do the former, and can add valuable information to CMB measurements for the latter. In particular, I will present current and upcoming constraints on modified gravity models from large-scale structure which take into account the non-linear screening mechanism present in these models. Further, I will show how the large-scale clustering of galaxies can serve as a unique probe of primordial non-Gaussianity, providing constraints complementary to the CMB. Finally, I will show how we can search for primordial gravity waves using the observed distribution of galaxies.

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