This paper is devoted to study the modified holographic dark energy model by taking its different aspects in the t/at Kaiuza-Klein universe. We construct the equation of state parameter which evolutes the universe fro...This paper is devoted to study the modified holographic dark energy model by taking its different aspects in the t/at Kaiuza-Klein universe. We construct the equation of state parameter which evolutes the universe from quintessence region towards the vacuum. It is found that the modified holographic model exhibits instability against small perturbations in the early epoch of the universe but becomes stable in the later times. We also develop its correspondence with some scalar field dark energy models. It is interesting to mention here that ail the results are consistent with the present observations.展开更多
We investigate the Hawking radiation of a Kaluza-Klein black hole by using one-dimensional(1D),nonequilibrium,Landauer transport model.The derived Hawking radiation temperature is in consistence with that obtained by ...We investigate the Hawking radiation of a Kaluza-Klein black hole by using one-dimensional(1D),nonequilibrium,Landauer transport model.The derived Hawking radiation temperature is in consistence with that obtained by using the usual anomaly method.With the Landauer transport model,we calculate the entropy flow out of the Kaluza-Klein black hole and the relevant entropy production rate.How these quantities depending on the physical parameters of the black hole is also discussed.展开更多
文摘This paper is devoted to study the modified holographic dark energy model by taking its different aspects in the t/at Kaiuza-Klein universe. We construct the equation of state parameter which evolutes the universe from quintessence region towards the vacuum. It is found that the modified holographic model exhibits instability against small perturbations in the early epoch of the universe but becomes stable in the later times. We also develop its correspondence with some scalar field dark energy models. It is interesting to mention here that ail the results are consistent with the present observations.
基金Supported by the National Natural Science Foundation of China under Grant Nos.90921010,11174373,11005086,11205125, 2010CB923104the Youth Foundation of Education Department of Sichuan Province under Grant No.11ZB032the Sichuan Youth Science and Technology Foundation under Grant No.2011JQ0019
文摘We investigate the Hawking radiation of a Kaluza-Klein black hole by using one-dimensional(1D),nonequilibrium,Landauer transport model.The derived Hawking radiation temperature is in consistence with that obtained by using the usual anomaly method.With the Landauer transport model,we calculate the entropy flow out of the Kaluza-Klein black hole and the relevant entropy production rate.How these quantities depending on the physical parameters of the black hole is also discussed.
