论文标题

暗能量和修改量表协变量理论

Dark Energy and Modified Scale Covariant Theory of Gravitation

论文作者

Singh, Koijam Manihar, Mandal, Sanjay, Devi, Longjam Parbati, Sahoo, P. K.

论文摘要

占领四个模型宇宙,我们研究了在修改的量表协变量理论中,黑暗能量对宇宙加速扩张的行为和贡献。在这里,可以看出,尽管这种修改的理论可能是加速扩张的原因,但它不能完全超出暗能在导致加速扩张方面的贡献。在一种情况下,发现黑能是加速膨胀的唯一原因。这些模型中包含的暗能量是$λ$ CDM类型和可与现代观测相媲美的典型类型。一些模型起源于大爆炸,在这个时代发展之前,黑暗能量在宇宙内部普遍存在。其中一个模型预测了大裂口奇异性,尽管在非常遥远的未来。有趣的是,在此处,量规函数$ ϕ(t)$在此吸引了黑暗能量与包含不同问题的宇宙另一部分之间的相互作用。

Taking up four model universes we study the behaviour and contribution of dark energy to the accelerated expansion of the universe, in the modified scale covariant theory of gravitation. Here, it is seen that though this modified theory may be a cause of the accelerated expansion it cannot totally outcast the contribution of dark energy in causing the accelerated expansion. In one case the dark energy is found to be the sole cause of the accelerated expansion. The dark energy contained in these models come out to be of the $Λ$CDM type and quintessence type comparable to the modern observations. Some of the models originated with a big bang, the dark energy being prevalent inside the universe before the evolution of this era. One of the models predicts big rip singularity, though at a very distant future. It is interestingly found that the interaction between the dark energy and the other part of the universe containing different matters is enticed and enhanced by the gauge function $ϕ(t)$ here.

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