标题： 标量-矢量引力理论中的 inflation 显示英文标题

标题： Inflation in a scalar-vector gravity theory

摘要： 我们研究了膨胀可能由一个标量场与一个矢量场共同驱动的可能性，这两个场与引力最小耦合。 通过假设一个有效势，该势能将两个场纳入作用量中，我们探讨了两种不同的场景：一种是场相互作用，另一种是场不相互作用。 在此背景下，在考虑慢滚近似的情况下，我们找到了膨胀情景下背景标量-矢量场动力学的不同解析解。 此外，我们确定并讨论了实现这两种场模型的一般条件。 从宇宙扰动出发，我们考虑了一个局部场旋转，然后我们确定了这些扰动（标量和张量）在膨胀期间的情况，并且我们还利用近期的宇宙观测数据来约束这些标量-矢量膨胀模型的参数空间。 显示英文摘要

摘要： We study the possibility that inflation is driven by a scalar field together with a vector field minimally coupled to gravity. By assuming an effective potential that incorporates both fields into the action, we explore two distinct scenarios: one where the fields interact and another where they do not. In this context, we find different analytical solutions to the background scalar-vector fields dynamics during the inflationary scenario considering the slow-roll approximation. Besides, general conditions required for these models of two fields to be realizable are determined and discussed. From the cosmological perturbations, we consider a local field rotation, and then we determine these perturbations (scalar and tensor) during inflation, and we also utilize recent cosmological observations for constraining the parameter-space in these scalar-vector inflationary models.