Gravity in 2 + ǫ Dimensions
نویسندگان
چکیده
Quantum theory of dilaton gravity is studied in 2+ ǫ dimensions. Divergences are computed and renormalized at one-loop order. The mixing between the Liouville field and the dilaton field eliminates 1/ǫ singularity in the Liouville-dilaton propagator. This smooth behavior of the dilaton gravity theory in the ǫ → 0 limit solves the oversubtraction problem which afflicted the higher orders of the Einstein gravity in 2 + ǫ dimensions. As a nontrivial fixed point, we find a dilaton gravity action which can be transformed to a CGHS type action. e-mail: [email protected] e-mail: [email protected] e-mail: [email protected]
منابع مشابه
Dilatonic gravity near two dimensions and asymptotic freedom of the gravitational coupling constant
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