标题： 非最小耦合的f(R)宇宙学 显示英文标题

标题： Non-minimally coupled f(R) Cosmology

摘要： 我们研究了与物质的非最小引力耦合的后果，并通过选择耦合性质的某些简单形式来研究它与最小耦合情况的不同。参数的值在$z=0$（当前时代）指定，方程向后演化以计算宇宙学参数的演化。 我们发现，在非最小耦合情况下，哈勃参数的演化比最小耦合情况更缓慢。 在两种情况下，宇宙在当前时间加速，并在过去进入减速阶段。 使用最新的Union2超新星Ia观测数据以及来自SDSS观测的重子声学振荡（BAO）数据，我们在两种不同的方法中约束了Linder指数模型的参数。 我们发现，在最小耦合情况下，模型参数有一个上限。 但在非最小耦合情况下，模型参数允许有一个范围的值。 显示英文摘要

摘要： We investigate the consequences of non-minimal gravitational coupling to matter and study how it differs from the case of minimal coupling by choosing certain simple forms for the nature of coupling, The values of the parameters are specified at $z=0$ (present epoch) and the equations are evolved backwards to calculate the evolution of cosmological parameters. We find that the Hubble parameter evolves more slowly in non-minimal coupling case as compared to the minimal coupling case. In both the cases, the universe accelerates around present time, and enters the decelerating regime in the past. Using the latest Union2 dataset for supernova Type Ia observations as well as the data for baryon acoustic oscillation (BAO) from SDSS observations, we constraint the parameters of Linder exponential model in the two different approaches. We find that there is a upper bound on model parameter in minimal coupling. But for non-minimal coupling case, there is range of allowed values for the model parameter.