Manifestly Local Formulation of Nonlocal Approach to the Cosmological Constant Problem
Manifestly Local Formulation of Nonlocal Approach to the Cosmological Constant Problem
复制标题
宇宙常数问题非局域方法的明显局域表述
DOI：
10.1103/physrevd.95.104020
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发表时间：
2017
影响因子：
5
通讯作者：
Ichiro Oda
中科院分区：
文献类型：
--
作者：
Pak Hang Chris Lau;Shigeki Sugimoto;Ichiro Oda;Ichiro Oda
我们提出了卡罗尔和雷曼最近提出的解决宇宙常数问题的非局部方法的明显局部和一般坐标不变公式。为此，我们需要引入一个涉及新的三形式规范场的拓扑术语。这个新的三形式规范场的运动方程导致拉格朗日乘数参数恒定，并且产生的作用等同于卡罗尔和雷曼的作用。在我们的公式中，非局部信息通过运动方程阶段的时空平均过程进行编码。因此，我们的理论避开了温伯格的不可行定理，并以与卡罗莱等人的原始提议几乎完全相同的方式为宇宙常数问题提供了新的解决方案。
We present a manifestly local and general coordinate invariant formulation of a nonlocal approach to the cosmological constant problem which has been recently proposed by Carroll and Remmen. To do that, we need to introduce a topological term involving a new 3-form gauge field. The equations of motion for this new 3-form gauge field lead to a constant Lagrange multiplier parameter and the resulting action becomes equivalent to that of Carroll and Remmen. In our formulation, nonlocal information is encoded via the procedure of taking the space-time average at the stage of the equations of motion. Consequently, our theory evades a no-go theorem by Weinberg and provides a new solution to the cosmological constant problem in almost exactly the same way as the original proposal by Carrollet al.