标题： 引力三次作用量的一环分析 显示英文标题

标题： One loop analysis of the cubic action for gravity

摘要： 我们分析了Cheung和Remmen最近提出的引力三次作用量的一些方面，这是一个一阶（Palatini）作用量的特例。在这种方法中，时空度规和联络都被视为独立场。我们讨论了其BRST不变性，并显式计算了在平直空间周围量子涨落的一环贡献，验证了相应的Slavnov-Taylor恒等式是否成立。最后，我们将关于一阶作用量的结果与现有的二阶作用量的结果进行了比较。 显示英文摘要

摘要： We analyze some aspects of the cubic action for gravity recently proposed by Cheung and Remmen, which is a particular instance of a first order (Palatini) action. In this approach both the spacetime metric and the connection are treated as independent fields. We discuss its BRST invariance and compute explicitly the one-loop contribution of quantum fluctuations around flat space, checking that the corresponding Slavnov-Taylor identities are fulfilled. Finally, our results on a first order action are compared with the existing ones corresponding to a second order action.