$R^2$ Gravity in $(2 ε)$-Dimensional Quantum Gravity

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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 $\epsilon ightarrow 0$ limit. The result is consistent with that obtained through Liouville approach.

Author: Jun Nishimura; Shinya Tamura; Asato Tsuchiya

Source: https://archive.org/