论文标题
在广义杂交公制重力理论中对暗能量和暗物质的统一描述
Unified description of dark energy and dark matter within the generalized hybrid metric-Palatini theory of gravity
论文作者
论文摘要
广义的杂交度量 - 帕拉蒂尼重力理论在两个相互作用的标量场上接受标量张量表示。我们表明，在适当选择相互作用电位的情况下，标量场的行为像暗能量一样，引起了宇宙的延迟加速膨胀，而其他标量场的行为就像是无压的深色物质，与普通的Baryonic物质一起占据了宇宙进化的中间阶段。对暗能量和暗物质的这种统一描述产生了可行的宇宙学解决方案，从而重现了宇宙进化的主要特征。
The generalized hybrid metric-Palatini theory of gravity admits a scalar-tensor representation in terms of two interacting scalar fields. We show that, upon an appropriate choice of the interaction potential, one of the scalar fields behaves like dark energy, inducing a late-time accelerated expansion of the universe, while the other scalar field behaves like pressureless dark matter that, together with ordinary baryonic matter, dominates the intermediate phases of cosmic evolution. This unified description of dark energy and dark matter gives rise to viable cosmological solutions, which reproduce the main features of the evolution of the universe.
