标题： 布安奇五型暴胀在布兰斯-迪克理论中？ 显示英文标题

标题： Bianchi V inflation in the Brans-Dicke theory?

摘要： 在Brans-Dicke（BD）理论中，展示了具有暴胀膨胀、平滑退出和渐近演化为Friedmann-Robertson-Walker（FRW）开放模型性质的Bianchi V度规的一些精确解。值得注意的是，即使没有宇宙学势或常数，也可以出现暴胀行为。然而，在标准BD理论中，视界和平坦性问题无法解决，因为暴胀时期受到BD参数$\omega$值的严重限制。 显示英文摘要

摘要： It is shown some exact solutions in the Brans-Dicke (BD) theory for a Bianchi V metric having the property of inflationary expansion, graceful exit, and asymptotic evolution to a Friedmann-Robertson-Walker (FRW) open model. It is remarkable that an inflationary behaviour can occur, even without a cosmological potential or constant. However, the horizon and flatness problems cannot be solve within the standard BD theory because the inflationary period is severely restricted by the value of the BD parameter $\omega$.