巨大的引力子被困在超星系里
Massive gravitons trapped inside a hypermonopole
摘要：
我们提出了一个规则的经典场论实现的Dvali-Gabadadze-Porrati机制考虑我们的宇宙是一个七维的t Hooft-Polyakov hyperplane的四维核心。我们证明了被困在核心中的亚稳态引力子的存在。它们的质谱是离散的、正定的，并且是根据场的耦合常数的不同值计算的：由此产生的牛顿引力定律在小距离和大距离上是7维的，但在中等长度尺度上可以变成4维的。在整体中不需要宇宙学常数，时空是渐近平坦的，在额外维度中具有无穷大的体积。限制是通过局部正曲率的额外的维度诱导的形成领域和自然值的耦合常数的订单单位。
英文摘要：
We propose a regular classical field theory realisation of the Dvali-Gabadadze-Porrati mechanism by considering our universe to be the four-dimensional core of a seven dimensional 't Hooft-Polyakov hypermonopole. We show the existence of metastable gravitons trapped in the core. Their mass spectrum is discrete, positive definite, and computed for various values of the field coupling constants: the resulting Newton gravity law is seven-dimensional at small and large distances but can be made four-dimensional on intermediate length scales. There is no need of a cosmological constant in the bulk, the spacetime is asymptotically flat and of infinite volume in the extra-dimensions. Confinement is achieved through the local positive curvature of the extra-dimensions induced by the monopole-forming fields and for natural values of the coupling constants of order unity.
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