Basic idea of Randall-Sundrum brane world model I and II is reviewed with detailed calculation. After introducing the brane world metric with exponential warp factor, metrics of Randall-Sundrum models are constructed. We explain how Randall-Sundrum model I with two branes makes the gauge hierarchy problem much milder, and derive Newtonian gravity in Randall-Sundrum model II with a single brane by considering small fluctuations.

• YOONBAI KIM(BK21 Physics Research Division and Institute of Basic Science, Sungkyunkwan University) Corresponding Author
• CHONG OH LEE(BK21 Physics Research Division and Institute of Basic Science, Sungkyunkwan University)
• ILBONG LEE(BK21 Physics Research Division and Institute of Basic Science, Sungkyunkwan University)