论文标题
宇宙常数的本地自我调整机制
A local self-tuning mechanism for the cosmological constant
论文作者
论文摘要
最近，提出，普朗克质量在一般相对论的爱因斯坦 - 希尔伯特作用中的全球变化被认为是宇宙学常数的一种自我调整机制，以防止真空能够自由地吸引真空能量。我们表明，这种全局机制对于通用局部标量张量理论而出现，标量场与三型仪表场的场强相结合，该量值在动作域上转向标量场常数。评估可观察到的宇宙对所产生的积分约束方程的评估产生了一个具有一般相对论场方程和任意辐射稳定稳定的残留宇宙常数的框架。我们认为，该残差的期望值与观察到的宇宙加速度的幅度非常吻合。
Recently the global variation of the Planck mass in the General Relativistic Einstein-Hilbert action was proposed as a self-tuning mechanism of the cosmological constant preventing vacuum energy from freely gravitating. We show that this global mechanism emerges for generic local scalar-tensor theories with additional coupling of the scalar field to the field strength of a three-form gauge field that turns the scalar field constant on the domain of the action. Evaluation of the resulting integral constraint equation over the observable Universe yields a self-consistent framework with General Relativistic field equations and arbitrary radiatively stable residual cosmological constant. We argue that the expectation value for this residual is in good agreement with the magnitude of the observed cosmic acceleration.
