On the sqrt2 puzzle in AdS2/CFT1
Abstract
In this letter we analyze the Hamiltonian formulation of the Jackiw-Teitelboim model of 2D gravity and calculate the central charge associated with the asymptotic symmetries, taking care of boundary terms. For black hole solutions, we show that there is no sqrt2 discrepancy between the thermodynamical entropy and the statistical one obtained via Cardy's formula.
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