Dynamic Domain Wall In The Charged Dilaton Black Hole Spacetimes

In this paper we study the dynamics of n-1 dimensional domain wall universe embedded in a n dimensional charged dilaton black hole bulk with the non-asymptotically flat and non-asymptotically(A)dS characters.We find that domain wall can always cross horizon,for which the dilaton coupling constant a and the ratio of pressure to density w play the role of controlling parameters.Then the consequent domain wall motion outside the black hole generally falls into five situations: all time accelerating expansion,slow expansion with a constant speed,expansion followed by collapsing into horizon,once bounce and accelerating collapsing into horizon.However,there exists a small patch of parametric sphere,in which the domain wall expansion first slows down and then accelerates.Our analysis also reveals that bounce can happen,while cyclic domain wall will not appear in our paper.Furthermore,aimed at the effect of dilaton field for domain wall,we introduce the charged topological dilaton black hole,in which we analyze the conditions of accelerating expansion of domain wall.By comparing the dynamic equations of all spacetime model,we find that the coupling between the dilaton field and Maxwell field is either suppressive or stimulative,for which,it depends on the different black hole model in the expansion of domain wall.When we choose the expansion stage as radiation w = 1/3 or matter stage w = 0,the range of dilaton coupling constant a can be gotten for every kind of background spacetime.Thus,it can be seen that the resultant coupling strength between dilaton field and Maxwell field depends on the different black hole models.Meanwhile,some model can not come true the accelerating expansion in the radiation or matter stage.