black holes in string theory;
supergravity models;
D O I:
10.1088/1126-6708/2008/03/074
中图分类号:
O412 [相对论、场论];
O572.2 [粒子物理学];
学科分类号:
摘要:
Using higher order corrections we argue that five dimensional N = 2 and N = 4 small black holes exhibit supersymmetry enhancement in near horizon geometry leading to eight and sixteen supercharges, respectively. Using this enhancement at supergravity level we can identify the global supergroup of the near horizon geometry. In particular we show how this supergroup distinguishes between small and large black holes in N = 2 case.