Radion in multibrane world
Radion in multibrane world
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多膜世界中的无线电
DOI：
10.1016/s0550-3213(02)00009-3
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
L. Pilo
中科院分区：
文献类型：
--
作者：
I. Kogan;Stavros Mouslopoulos;A. Papazoglou;L. Pilo
在线性化近似下研究了具有正张力和负张力的运动膜的存在下的辐射子动力学。计算了一个具有三个膜的紧致系统的径向有效拉格朗日量，特别是当一个膜被发送到无穷远时，我们研究了解压缩极限。在非紧的情况下，我们计算了引力模（引力子、介子和辐射子）与膜上物质的耦合。本文还讨论了两种膜上引力的性质，以及各种可能的膜张力组合。事实证明，即使在非紧的情况下，也可以有一个可规范化的双光子模式。最后，我们推测移动膜作为放射子发射的可能来源的作用。
The radion dynamics related to the presence of moving branes with both positive or negative tensions is studied in the linearized approximation. The radion effective Lagrangian is computed for a compact system with three branes and in particular we examine the decompactification limit when one brane is sent to infinity. In the non-compact case we calculate the coupling of the gravitational modes (graviton, dilaton and radion) to matter on the branes. The character of gravity on the two branes for all possible combinations of brane tensions is also discussed. It turns out that one can have a normalizable dilaton mode even in the non-compact case. Finally, we speculate on the role of moving branes as a possible source of radion emission.