Following the holographic principle,which suggests that the energy density of dark energy may be inversely proportional to the area of the event horizon of the Universe,we propose a new energy density of dark energy t...Following the holographic principle,which suggests that the energy density of dark energy may be inversely proportional to the area of the event horizon of the Universe,we propose a new energy density of dark energy through the acceleration of the particle horizon scaled by the length of this parameter.The proposed model depends only on one free parameter:β=O-1.99.For values of β near zero,the deviation between the proposed model and the ∧ CDM model is significant,while forβ-→1.99,the suggested model has no conflict with the ∧ CDM theory.Regardless of the value of β,the model considers dark energy to behave as matter with positive pressure in high redshifts,wx 0.33,while for present and near-future Universe,it is considered to behave similar to that in the cosmological constant model and phantom field.Comparing the model with the Ricci dark energy model,we show that our model reduces the errors of the Ricci dark energy model concerning the calculation of the age of old supernovae and evolution of different cosmic components in high redshifts.Moreover,we calculated matter structure formation parameters such as the CMB temperature and matter power spectrum of the model to consider the effects of matter-like dark energy during the matter-dominated era.展开更多
文摘Following the holographic principle,which suggests that the energy density of dark energy may be inversely proportional to the area of the event horizon of the Universe,we propose a new energy density of dark energy through the acceleration of the particle horizon scaled by the length of this parameter.The proposed model depends only on one free parameter:β=O-1.99.For values of β near zero,the deviation between the proposed model and the ∧ CDM model is significant,while forβ-→1.99,the suggested model has no conflict with the ∧ CDM theory.Regardless of the value of β,the model considers dark energy to behave as matter with positive pressure in high redshifts,wx 0.33,while for present and near-future Universe,it is considered to behave similar to that in the cosmological constant model and phantom field.Comparing the model with the Ricci dark energy model,we show that our model reduces the errors of the Ricci dark energy model concerning the calculation of the age of old supernovae and evolution of different cosmic components in high redshifts.Moreover,we calculated matter structure formation parameters such as the CMB temperature and matter power spectrum of the model to consider the effects of matter-like dark energy during the matter-dominated era.
