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arXiv 1306.2169hep-th
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超共形对称与高阶导数拉格朗日量

Superconformal symmetry and higher-derivative Lagrangians

Antoine Van Proeyen

摘要:

超共形方法是建立超引力中不变作用量的有效方法。我们对时空导数至多为二次的作用的可能性有了很好的了解,但对一般高阶导数作用的了解却缺失了。最近,高阶导数作用在几个应用中得到了更多的关注。其中之一是理解超重力中循环计算的有限性。只有当存在不变的反项或反常项时,发散才会发生。人们可能想知道,在这种情况下,共形对称是否也会发挥作用。为了用保角方法构造高导数超引力,首先应该对这种具有额外费米子对称性的刚性超对称作用量有更多的了解。我们展示了如何狄拉克-玻恩-因菲尔德行动与Volkov-阿库洛夫超对称可以在所有的订单。

英文摘要:

Superconformal methods are useful to build invariant actions in supergravity. We have a good insight in the possibilities of actions that are at most quadratic in spacetime derivatives, but insight in general higher-derivative actions is missing. Recently higher-derivative actions got more attention for several applications. One of these is the understanding of finiteness of loop computations in supergravities. Divergences can only occur if invariant counterterms or anomalies exist. One can wonder whether conformal symmetry might also play a role in this context. In order to construct higher-derivative supergravities with the conformal methods, one should first get more insight in such rigid supersymmetric actions with extra fermionic symmetries. We show how Dirac--Born--Infeld actions with Volkov--Akulov supersymmetries can be constructed in all orders.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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