论文标题
S-Brane Ekpyrosis后重新加热
Reheating after S-Brane Ekpyrosis
论文作者
论文摘要
在最近的工作中，我们两个人提出了一种非挥发性宇宙学，利用了S-Brane在ekpyrato收缩阶段结束时形成的S-Brane。该s桥介导收缩和扩张之间的过渡。通过S-Brane的Graviatiation Wave获得了一个大致的尺度不变光谱，如果S-Brane的剪切零剪切，则大致规模不变的宇宙学扰动结果。在这里，我们研究了由S-Brane衰减驱动的量规场波动的产生，并表明通过量规场产生的再加热过程将是有效的，从而导致辐射主导的扩展阶段。
In recent work, two of us proposed a nonsingular Ekpyrotic cosmology making use of an S-brane which forms at the end of the phase of Ekpyrotic contraction. This S-Brane mediates a transition between contraction and expansion. Graviitational waves passing through the S-Brane acquire a roughly scale-invariant spectrum, and if the S-Brane has zero shear, then a roughly scale-invariant spectrum of cosmological perturbatiions results. Here, we study the production of gauge field fluctuations driven by the decay of the S-Brane, and we show that the reheating process via gauge field production will be efficient, leading to a radiation-dominated expanding phase.
