论文标题
在Symmetron的域壁的存在下，宇宙空隙更空虚
Cosmic voids are emptier in the presence of symmetron's domain walls
论文作者
论文摘要
对称元素场具有一种环境（密度）依赖性行为，这是具有筛选机制的模型的共同特征，并导致了丰富的现象学。该模型可以在密度不同的区域之间产生域壁。我们考虑了这一方面，并研究了（低密度）空隙和（过度密度）光环结构之间的域壁物理。 （球形）域壁在墙外的测试质量上施加排斥力，而墙壁内的测试质量则没有力。这使得空隙之外的结构越来越大。实际上，这意味着与宇宙学的标准模型相比，在这种情况下，空隙变得更大。有趣的是，这使空白变得空虚，这可能会揭示Peebles的空白现象。
The symmetron field has an environment (density) dependent behavior which is a common feature of the models with the screening mechanism and results in a rich phenomenology. This model can produce domain walls between regions with different densities. We consider this aspect and study the physics of domain walls in between (underdensity) voids and (overdensity) halo structures. The (spherical) domain walls exert a repulsive force on a test mass outside of the wall while a test mass inside of the wall sees no force. This makes the structures outside the voids go further to a larger radius. Effectively, this means the voids are becoming larger in this scenario in comparison to the standard model of cosmology. Interestingly, this makes voids emptier which may shed light on Peebles' void phenomenon.
