Probing Neutrinos from Planck and Forthcoming Galaxy Redshift Surveys
  We investigate how much the constraints on the neutrino properties can be
improved by combining the CMB, the photometric and spectroscopic galaxy
redshift surveys which include the CMB lensing, galaxy lensing tomography,
galaxy clustering and redshift space distortion observables. We pay a
particular attention to the constraint on the neutrino mass in view of the
forthcoming redshift surveys such as the Euclid satellite and the LSST survey
along with the Planck CMB lensing measurements. Combining the transverse mode
information from the angular power spectrum and the longitudinal mode
information from the spectroscopic survey with the redshift space distortion
measurements can determine the total neutrino mass with the projected error of
O(0.02)eV. Our analysis fixes the mass splittings among the neutrino species to
be consistent with the neutrino oscillation data, and we accordingly study the
sensitivity of our parameter estimations on the minimal neutrino mass. The
cosmological measurement of the total neutrino mass can distinguish between the
normal and inverted mass hierarchy scenarios if the minimal neutrino mass <
0.005 eV with the predicted 1-{\sigma} uncertainties taken into account.
