简并粒子激发的SUGRA模型中宇宙学常数的小性
On the Smallness of the Cosmological Constant in SUGRA Models Inspired by Degenerate Vacua
摘要：
在无尺度超引力中，整体对称性保护了局部超对称性和宇宙学常数的零值。这些对称性的破坏，确保了真空能量密度的消失，导致一组退化的真空，具有破缺和未破缺的超对称性，从而导致多点原理（MPP）的自然实现。在受MPP启发的SUGRA模型中，宇宙学常数自然很小。
英文摘要：
In the no-scale supergravity global symmetries protect local supersymmetry and a zero value for the cosmological constant. The breakdown of these symmetries, which ensures the vanishing of the vacuum energy density, results in a set of degenerate vacua with broken and unbroken supersymmetry leading to the natural realisation of the multiple point principle (MPP). In the MPP inspired SUGRA models the cosmological constant is naturally tiny.
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