论文标题
带有古典U（1）字段三联的暗能量
Dark Energy with a Triplet of Classical U(1) Fields
论文作者
论文摘要
我们提出了一种新的机制，用于宇宙加速度，该机制由标量场与经典u（1）仪表场三联体组成。量规场以均质的各向同性构型排列，具有电磁真空期望值。量规场通过Chern-Simons相互作用提供了类似质量的术语，该术语将标量悬挂在其潜在的最小值上，从而实现了潜在主导的进化。我们显示这种机制可以推动短暂的加速度，例如暗能量，而无需进行微调。我们获得了状态的暗能量方程和对模型参数的依赖性的简单分析结果。在此模型中，量规场的存在通常导致抑制长波长重力波，这对宇宙微波背景B模型的实验搜索产生了影响，并直接检测了随机引力波背景。
We present a new mechanism for cosmic acceleration consisting of a scalar field coupled to a triplet of classical U(1) gauge fields. The gauge fields are arranged in a homogeneous, isotropic configuration, with both electric- and magnetic-like vacuum expectation values. The gauge fields provide a mass-like term via a Chern-Simons interaction that suspends the scalar away from its potential minimum, thereby enabling potential-dominated evolution. We show this mechanism can drive a brief period of acceleration, such as dark energy, without the need for fine tunings. We obtain simple analytic results for the dark energy equation of state and dependence on model parameters. In this model, the presence of the gauge field generically leads to a suppression of long-wavelength gravitational waves, with implications for the experimental search for cosmic microwave background B-modes and direct detection of a stochastic gravitational wave background.
