We study bosonization ambiguities in two dimensional quantum eletrodynamics in the presence and in the absence of topologically charged gauge fields. The computation of fermionic correlation functions gives us a mechanism to fix the ambiguities in nontrivial topologies, provided that we do not allow changes of sector as we evaluate functional integrals. This removes an infinite arbitrariness fr...

We discuss lowering the order of the two-dimensional scalar-tensor R2 quantum gravity, by mapping the most general version of the model to a multi-dilaton gravity, which is essentially the sigma-model coupled with the Jackiw-Teitelboim-like gravity. In the continuation of our previous research, we calculate the divergent part of the one-loop effective action in a 2D scalar-tensor (dilatonic) gr...

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 √ 2 discrepancy between the thermodynamical entropy and the statistical one obtained via Cardy’s formula. PACS numbers: 04.20.-q, 04.70.-s, ...

A bstract Recently, it has been argued in [1] that Jackiw-Teitelboim (JT) gravity can be naturally realized the Karch-Randall braneworld (2 + 1) dimensions. Using ‘complexity=volume’ proposal, we studied this model and computed holographic complexity of JT from bulk perspective. We find grows linearly with boundary time at late times, leading order contribution is proportional to φ 0 , similar ...