Abstract We consider a brane cosmology scenario by taking an inflating 3D domain wall immersed in a five-dimensional Minkowski space in the presence of a stack of N parallel domain walls. They are static BPS solutions of the bosonic sector of a 5D supergravity theory. However, one can move towards each other due to an attractive force in between driven by bulk particle collisions and resonant tunneling effect. The accelerating domain wall is a 3-brane that is assumed to be our inflating early Universe. We analyze this inflationary phase governed by the inflaton potential induced on the brane. We compute the slow-roll parameters and show that the spectral index and the tensor-to-scalar ratio are within the recent observational data.

中文翻译：

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膜膨胀和观察方面的畴壁描述

摘要我们通过在 N 平行畴壁的堆叠存在下将膨胀的 3D 畴壁浸入五维 Minkowski 空间来考虑膜宇宙学场景。它们是 5D 超引力理论玻色子扇区的静态 BPS 解。然而，由于大颗粒碰撞和共振隧道效应驱动的吸引力，一个人可以相互移动。加速畴壁是一个 3 膜，被认为是我们膨胀的早期宇宙。我们分析了这个由膜上引起的暴胀子势所控制的暴胀阶段。我们计算慢滚参数并表明光谱指数和张量与标量的比率在最近的观测数据内。