Deger Nihat Sadik, Geiller Marc, Rosseel Jan, Samtleben Henning
Department of Mathematics, Bogazici University, Bebek, 34342 Istanbul, Turkey.
Feza Gursey Center for Physics and Mathematics, Bogazici University, Kandilli, 34684 Istanbul, Turkey.
Phys Rev Lett. 2022 Oct 21;129(17):171601. doi: 10.1103/PhysRevLett.129.171601.
Minimal massive gravity in three dimensions propagates a single massive spin-2 mode around an anti-de Sitter vacuum. It is distinguished by allowing for vacua with positive central charges of the asymptotic conformal algebra and a bulk graviton of positive energy. We present a new action for the model (and its higher order extensions) in terms of a dreibein and an independent spin connection. From this, we construct its supersymmetric extension. Surprisingly, all vacua complying with bulk and boundary unitarity appear to break supersymmetry spontaneously. In contrast, all supersymmetric vacua have a negative central charge whenever the bulk graviton has positive energy.
三维极小质量引力在反德西特真空周围传播一种单一的有质量自旋 - 2 模式。它的独特之处在于允许渐近共形代数具有正中心荷的真空以及正能量的体引力子。我们根据 dreibein 和一个独立的自旋联络给出了该模型（及其高阶扩展）的一个新作用量。由此，我们构建了它的超对称扩展。令人惊讶的是，所有符合体和边界幺正性的真空似乎都会自发破缺超对称性。相反，只要体引力子具有正能量，所有超对称真空都有负中心荷。
