23 citations · 38 across the 5 of their papers we have counts for
6 papers
Near-extremal quantum cross-section for charged fields and superradiance
Panos Betzios, Olga Papadoulaki, Yanjun Zhou
We study the scattering and absorption properties of charged scalar fields on a near-extremal Reissner-Nordström black hole background. We show that in this low-temperature regime…
Black hole - wormhole transitions in two dimensional string theory
Panos Betzios, Nava Gaddam, Olga Papadoulaki
We study charged black hole and wormhole solutions of Type 0A/IIA string theory in two dimensions. There is a competition between Euclidean wormholes and near extremal black holes…
Wilson Loops and Wormholes
Panos Betzios, Olga Papadoulaki
We analyse the properties of Wilson loop observables for holographic gauge theories, when the dual bulk geometries have a single and/or multiple boundaries (Euclidean spacetime wor…
Microstates of a Black Hole in string theory
Panos Betzios, Olga Papadoulaki
We analyse models of Matrix Quantum Mechanics in the double scaling limit that contain non-singlet states. The finite temperature partition function of such systems contains non-tr…
Black Hole S-matrix for a scalar field
Panos Betzios, Nava Gaddam, Olga Papadoulaki
We describe a unitary scattering process, as observed from spatial infinity, of massless scalar particles on an asymptotically flat Schwarzschild black hole background. In order to…
FZZT branes and non-singlets of Matrix Quantum Mechanics
Panos Betzios, Olga Papadoulaki
We explore the non-singlet sector of matrix quantum mechanics dual to Liouville theory. The non-singlets are obtained by adding bi-fundamental fields in the g…