论文标题
Lagrangian的非唯一性的幻影场真空稳定性
Vacuum stability of phantom field from the nonuniqueness of Lagrangian
论文作者
论文摘要
根据非唯一原则，可以以各种形式和非标准的标量标量呈拉格朗日。因此，在Klein-Gordon方程仍然完整时，可以将标准和所有可能的Lagrangians进行线性合并。 Lagrangians的这种线性组合用于证明均匀幻影场的能量密度可能从下方界定。讨论了这种新拉格朗日的应用在幽灵冷凝物的性质和$ w <-1 $的状态方程式中的应用。
According to the nonuniqueness principle, the homogeneous scalar field Lagrangian can be expressed in various forms both standard and nonstandard ones. Therefore, the standard and all possible nonstandard Lagrangians can be linearly combined while the Klein-Gordon equation is still intact. This linear combination of Lagrangians is used to demonstrate that the energy density of homogeneous phantom field can possibly be bounded from below. The applications of this new Lagrangian in the nature of the ghost condensate and the equation of state with $w<-1$ are discussed.
