First law of thermodynamics and Friedmann-like equations in braneworld cosmology

作者：Ge Xian Hui^*

来源：Physics Letters B, 2007, 651(1): 49-53.

DOI：10.1016/j.physletb.2007.05.055

We derive the Friedmann-like equations in braneworld cosmology by imposing the first law of thermodynamics and Bekenstein's area-entropy formula on the apparent horizon of a Friedmann-Robertson-Walker universe in both Randall-Sundrum II gravity and Dvali-Gabadadze-Porrati gravity models. Israel's boundary condition plays an important role in our calculations in both cases, besides the first law of thermodynamics and Bekenstein's area-entropy formula. The results indicate that thermodynamics on the brane world knows the behaviors of gravity.

• 出版日期2007-7-19