Non-linear dynamics of the minimal theory of massive gravity

Non-linear dynamics of the minimal theory of massive gravity
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极小质量引力理论的非线性动力学

DOI:
10.1051/0004-6361/202040018
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发表时间:
2021
影响因子:
6.5
通讯作者:
Mukohyama S.
Mukohyama S.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Hagala R.;De Felice A.;Mota D. F.;Mukohyama S.

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我们研究了最小质量引力理论(MTMG)的宇宙学特征。为此,我们模拟正常的分支的MTMG采用RAMSESN体代码和扩展它与一个有效的引力常数Geff。我们实现了一个依赖于环境的Geffas函数的引力子质量和本地的能量密度MTMG预测。我们发现,晕密度分布不是一个很好的探测MTMG,因为偏离广义相对论(GR)是相当小的。同样,物质功率谱仅在百分比水平上显示偏差。然而,我们发现MTMG和GR之间的一个明显的区别是,空隙密度在MTMG比在GR。作为测量空隙配置文件是一个相当复杂的任务,从观测的角度来看,一个更好的探测MTMG将是晕丰度。在这种情况下,MTMG会产生大量的大质量光晕,而小光晕的丰度会受到抑制。
We investigate cosmological signatures of the minimal theory of massive gravity (MTMG). To this aim, we simulate the normal branch of the MTMG by employing the RAMSESN-body code and extending it with an effective gravitational constantGeff. We implement an environment-dependentGeffas a function of the graviton mass and the local energy density as predicted by MTMG. We find that halo density profiles are not a good probe for MTMG because deviations from general relativity (GR) are quite small. Similarly, the matter power spectra show deviations only at the percentage level. However, we find a clear difference between MTMG and GR in that voids are denser in MTMG than in GR. As measuring void profiles is quite a complex task from an observational point of view, a better probe of MTMG would be the halo abundances. In this case, MTMG creates a larger amount of massive halos, while there is a suppression in the abundance of small halos.
DOI: 10.1088/1475-7516/2020/09/034
发表时间: 2020
影响因子: 6.4
作者:
Felice Antonio De;Doll Andreas;Mukohyama Shinji
通讯作者: Mukohyama Shinji
DOI: 10.1088/1475-7516/2011/11/030
发表时间: 2011-09
影响因子: 6.4
作者:
A. Gumrukcuoglu;Chunshan Lin;S. Mukohyama
通讯作者: A. Gumrukcuoglu;Chunshan Lin;S. Mukohyama
DOI: 10.1103/physrevd.101.064002
发表时间: 2020-03-03
期刊: PHYSICAL REVIEW D
影响因子: 5
作者:
Feng, Justin C.;Carloni, Sante
通讯作者: Carloni, Sante