STRUCTURE FORMATION IN THE SYMMETRON MODEL

STRUCTURE FORMATION IN THE SYMMETRON MODEL
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SYMMETRON 模型中的结构形成

DOI:
10.1088/0004-637x/748/1/61
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发表时间:
2011
期刊:
The Astrophysical Journal
影响因子:
--
通讯作者:
H. Winther
H. Winther
中科院分区:
--
文献类型:
--
作者:
A. Davis;Baojiu Li;D. Mota;H. Winther

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与物质强耦合的标量场可以存在于自然界中,但如果它们受到筛选机制的约束,在局部实验中仍然是不可见的。对称就是这样一种机制,它依赖于恢复高密度区域中自发破坏的对称性来屏蔽标量第五力。我们利用n体模拟研究了对称模型中的结构形成,并在线性和非线性物质功率谱以及光晕质量函数中发现了可观测的特征。在高密度区域抑制标量第五力的机制也被发现是非常有效的。
Scalar fields, strongly coupled to matter, can be present in nature and still be invisible to local experiments if they are subject to a screening mechanism. The symmetron is one such mechanism that relies on restoration of a spontaneously broken symmetry in regions of high density to shield the scalar fifth force. We have investigated structure formation in the symmetron model by using N-body simulations and find observable signatures in both the linear and nonlinear matter power spectrum and on the halo mass function. The mechanism for suppressing the scalar fifth force in high-density regions is also found to work very well.
DOI: 10.1111/j.1365-2966.2009.15987.x
发表时间: 2008-12
影响因子: 4.8
作者:
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DOI: 10.1103/physrevd.82.063519
发表时间: 2010-09-15
期刊: PHYSICAL REVIEW D
影响因子: 5
作者:
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通讯作者: Shaw, Douglas