Reconstructing the distortion function for non-local gravity

Frontiers in Theoretical and Applied Physics/UAE 2017

Roobiat, K.Y.^1 ; Pazhouhesh, R.^1

Physics Department, University of Birjand, Birjand, Iran^1

关键词: Background level;    Cold dark matters;    Cosmological constants;    Distortion functions;    Hyperbolic tangent function;    New functions;    Nonlocal models;    Structure formations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/869/1/012056/pdf
DOI  :  10.1088/1742-6596/869/1/012056

来源: IOP

【 摘 要 】

We develop Maggiore and Mancarella non-local model by using new function, f (m2R/2) and we obtained analytical hyperbolic tangent function. This new model has expansion history exactly as same as ACDM (Lambda Cold Dark Matter) with same matter content, but without cosmological constant or dark energy. However, background evolution in our model and ACDM are the same, but these models may be distinguishable in structure formation or observation that will contain additional information more than background level.