$R^2$ Gravity in $(2+\epsilon)$--Dimensional Quantum Gravity
  We study $R^2$ gravity in $(2+\epsilon)$--dimensional quantum gravity. Taking care of the oversubtraction problem in the conformal mode dynamics, we perform a full order calculation of string susceptibility in the $\epsilon \rightarrow 0$ limit. The result is consistent with that obtained through Liouville approach. 
Jun Nishimura, Shinya Tamura and Asato Tsuchiya