论文标题
大量重力的Braneworld模型
A braneworld model in a massive gravity
论文作者
论文摘要
lorentz侵入大量重力的5D延伸构建了一种类似Randall-Sundrum的Braneworld场景。仪表层次结构问题在当前模型中解决。线性扰动是计算的，发现张量和矢量扰动是强大的，并且没有幽灵和速度不稳定性，但是，标量扰动是幽灵提出的。 kaluza-klein还原后，所有张量，矢量和标量模式都是巨大的，并且在其各自的质谱中具有TEV顺序的质量分裂。张量和标量模式的巨大基态仅沿着勃雷传播，但是，质谱中不存在矢量基态。通过引入戈德伯格的机制以稳定额外的维度，勃板上的4D有效理论包括几乎无质量的重力以及三个非常庞大的自旋-2，spin-1和Ghost Spin-0颗粒的塔。
A Randall-Sundrum-like braneworld scenario is constructed in a 5D extension of the Lorentz-violating massive gravity. The gauge hierarchy problem is solved in current model. The linear perturbations are calculated, and it is found that the tensor and vector perturbations are robust and free from the ghost and tachyonic instabilities, however, the scalar perturbation is a ghost filed. After Kaluza-Klein reduction, all the tensor, vector and scalar modes are massive and possess the mass splitting of order of TeV in their respective mass spectra. The massive ground states of tensor and scalar modes propagate only along the brane, however, the vector ground state is absent in the mass spectrum. By introducing the Goldberger-Wise mechanism to stabilize the extra dimension, the 4D effective theory on the brane includes a nearly massless graviton plus three towers of very massive spin-2, spin-1 and ghost spin-0 particles.
