膜上的碰撞波、大反弹和重连
Colliding Waves on a Brane, the Big Bounce and Reconnection
摘要：
我们提出了一个依赖于时间的解决方案的Nambu-Goto行动，代表两个碰撞波以光速移动。这个解可以分解成两个不同的区域，对应于收缩或膨胀的膜宇宙和两个碰撞的膜。前者描述了没有奇点的大反弹，而后者描述了两个膜相互碰撞和重新连接。碰撞的膜区域有一个特征变化。利用测地线研究了膜上大质量粒子的经典动力学。
英文摘要：
We present a time-dependent solution of the Nambu-Goto action which represents two colliding waves moving at the speed of light. This solution can be decomposed into two distinct regions with different geometries corresponding to shrinking or expanding brane universe and two colliding branes. The former describes the Big Bounce without singularity while the latter describes that two branes collide and reconnect to each other. The colliding brane region has a signature change. Classical dynamics of a massive particle on the brane is studied through the geodesics.
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