论文标题
协变量的BRST量化单型重力II-具有矢量抗恒定的配方 -
Covariant BRST Quantization of Unimodular Gravity II -- Formulation with a vector antighost --
论文作者
论文摘要
在我们的上一篇论文中，我们提出了对单模型重力的协变量量化，这可能解释了宇宙常数的较小性，并表明理论中的物理自由度与一般相对性相同。该公式是通过对幽灵和抗高丝岩的rank-2反对称张量场给出的。在这里，我们使用抗脉冲的矢量场给出了替代公式，但为幽灵保留相同的结构。这给出了更简单的协变量量化，而幽灵领域中没有更少的幽灵，没有三缸模式。我们表明，这也仅提供两个物理横向模式，如一般相对论。
In our previous paper, we have presented a covariant BRST quantization of unimodular gravity which may account for the smallness of the cosmological constant, and have shown that the physical degrees of freedom in the theory are the same as general relativity. The formulation has been given by using rank-2 antisymmetric tensor fields for both ghosts and antighosts. Here we give an alternative formulation using a vector field for the antighost but keeping the same structure for the ghosts. This gives a significantly simpler covariant quantization with less ghosts and no tripole modes in the ghost sector. We show that this also gives only two physical transverse modes as in general relativity.
