论文标题
在移动的braneworld上的超光繁殖
Superluminal Propagation on a Moving Braneworld
论文作者
论文摘要
我们在最简单的设置中考虑了braneworld方案，即$ m_4 \ times s^1 $，在勃板上引起了4D Minkowski公制，并确定了静脉传播的可能性。如果布兰河静止，则精确的4d洛伦兹对称性是精确的，但是如果勃雷河在运动中，则通过紧凑型在全球范围内将其折断。通过测量散装场，Brane上的观察者可以通过高维场的轮廓看到一个切片，即使Brane处于静止状态，它也会带有额外尺寸的烙印。如果棕褐色在运动中，我们会发现散装场可以通过Brane速度设置的参数量大量散布在Brane LightCone之外。我们提到了观察性测试以及宇宙学的可能应用。
We consider a braneworld scenario in the simplest setting, $M_4 \times S^1$, with a 4D Minkowski metric induced on the brane, and establish the possibility of superluminal propagation. If the brane is at rest, the 4D Lorentz symmetry of the brane is exact, but if the brane is in motion, it is broken globally by the compactification. By measuring bulk fields, an observer on the brane sees a slice through a higher-dimensional field profile, which carries an imprint of the extra dimensions even when the brane is at rest. If the brane is in motion we find that bulk fields can propagate outside the brane lightcone by a parametrically large amount set by the brane velocity. We mention observational tests and possible applications to cosmology.
