PT Journal
AU Escudero, M
   Mena, O
   Vincent, AC
   Wilkinson, RJ
   Boehm, C
TI Exploring dark matter microphysics with galaxy surveys
SO Journal of Cosmology and Astroparticle Physics
JI J. Cosmol. Astropart. Phys.
PY 2015
BP 034
EP 16pp
VL 09
IS 9
DI 10.1088/1475-7516/2015/09/034
LA English
DE dark matter theory; galaxy surveys; cosmological parameters from CMBR
AB We use present cosmological observations and forecasts of future experiments to illustrate the power of large-scale structure (LSS) surveys in probing dark matter (DM) microphysics and unveiling potential deviations from the standard ACDM scenario. To quantify this statement, we focus on an extension of ACDM with DM-neutrino scattering, which leaves a distinctive imprint on the angular and matter power spectra. After finding that future CMB experiments (such as COrE+) will not significantly improve the constraints set by the Planck satellite, we show that the next generation of galaxy clustering surveys (such as DESI) could play a leading role in constraining alternative cosmologies and even have the potential to make a discovery. Typically we find that DESI would be an order of magnitude more sensitive to DM interactions than Planck, thus probing effects that until now have only been accessible via N-body simulations.
ER