Anisotropic hyperbolic inflation
Anisotropic hyperbolic inflation
复制标题
各向异性双曲线膨胀
DOI：
10.1088/1475-7516/2021/09/026
复制
发表时间：
2021
影响因子：
6.4
通讯作者：
Soda Jiro
中科院分区：
文献类型：
--
作者：
Chen Chong-Bin;Soda Jiro
双曲暴胀是多场模型中慢滚暴胀的延伸。我们通过添加规范场来扩展双曲暴胀，并找到四种类型的吸引子解：慢滚暴胀、双曲暴胀、各向异性慢滚暴胀和各向异性双曲暴胀。我们用动力系统方法进行稳定性分析。我们还研究了各向异性慢滚膨胀和各向异性双曲线膨胀之间解的过渡行为。我们的结果表明，标准慢速暴胀的不稳定普遍发生在多标量规范场暴胀场景中。
Hyperbolic inflation is an extension of the slow-roll inflation in multi-field models. We extend hyperbolic inflation by adding a gauge field and find four-type attractor solutions: slow-roll inflation, hyperbolic inflation, anisotropic slow roll inflation, and anisotropic hyperbolic inflation. We perform the stability analysis with the dynamical system method. We also study the transition behaviors of solutions between anisotropic slow roll inflation and anisotropic hyperbolic inflation. Our result indicates that destabilization of the standard slow-roll inflation ubiquitously occurs in multi-scalar-gauge field inflationary scenarios.