论文标题
四维brane-chern-simons重力和宇宙学
Four-dimensional Brane-Chern-Simons Gravity and Cosmology
论文作者
论文摘要
从与重力的爱因斯坦 - 切尔恩 - 锡族理论的5维时空中的4维毛线相对应的场方程中，我们发现宇宙学解决方案描述了平坦宇宙的加速膨胀。除了典型型演化方案外，我们还获得了瞬态幻影演化，当前观察数据并未排除。此外，还显示了弹跳解决方案。动作中的动力学术语的引入显示了设置的行为，尽管能量密度不是恒定的。还发现了典型行为。我们猜想了来自此动作的暗能量的可能的几何起源。
From the field equations corresponding to a 4-dimensional brane embedded in the 5-dimensional spacetime of the Einstein-Chern-Simons theory for gravity, we find cosmological solutions that describe an accelerated expansion for a flat universe. Apart from a quintessence-type evolution scheme, we obtain a transient phantom evolution, which is not ruled out by the current observational data. Additionally, a bouncing solution is shown. The introduction of a kinetic term in the action shows a de Sitter behavior although the energy density is not constant. A quintessence behavior is also found. We conjecture on a possible geometric origin of dark energy coming from this action.
