Constraints On Holographic Dark Energy And Neutrinos With Cosmological Measurements

Holographic dark energy model is an important strong candidate of dark energy to explain the accelerated expansion of universe and dark energy.It is based on Friedamnn equation,and applying the dynamics of expansion,and is established on the holographic principle,which is the typical dynamic dark energy model.The cosmological measure-ments axe another important addition to the selection of models.The groups of cosmo-logical observation always provide the accurate data,and then become the main method to have a joint analysis on the models and cosmological parameters.In our paper,we made use of observations:Cosmic microwave background,Baryon acoustic oscillation,Ia type supernova,the direct measurement of Hubble parameter,Weak lensing,and redshift-space distortion.We will constraint on the holographic dark energy model with combination of the above.We divide the whole paper into two sections.First,we put forward alternative holographic dark energy model in the non-flat space,it strictly follow the definition of future event horizon to take IR length cutoff to be the event horizon size,it seems to be more reasonable and natural.Also we use the latest observation data to limit model,including Supernova Legacy Survey data,Baryon Acoustic Oscillation,Cosmic Microwave Background,the direct measurement of Hubble parameter.In the supernova data,we consider that the color-luminosity parameters ? is evolved with time.We found from the results comparing with constant ? situation,the time-varing ? case can reduce the value of x2 by about 35 and results in that ? deviates from a constant at about 5? level,?(z)yields c=0.72±0.06.In addition,the above data limiting holographic dark energy models are more likely to get an open universe(about 2?).Second,based on the latest data from the universe's expansion history and growth of strcuture observation,including Planck Cosmic microwave background temperature measurement,baryon acoustic oscillation observation data,the joint light-curve analysis data,weak gravitational lensing,redshift space distortion,the hubble constant,to achieve the whole fitting analysis of holographic dark energy model and the parameters after jointing neutrino.The fitting result in the holographic dark energy model by these data is,?mv<0.186 eV(2?);Neff=3.75-0.32+0.28(1?).In addition,calculating the perturbation of HDE with the parameterized post-Friedmann method which can correctly deal with the perturbation's divergence when w crossing-1,and presents the perturbation of the density composition,considering the impact neutrino mass and effective neutrino species have on the CMB power spectrum.