133 citations · 1.1k across the 54 of their papers we have counts for
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Thermal Origin of Black Hole Quasinormal Modes
D. Giataganas, G. F. Giudice, A. Kehagias +2
When a black hole rings after a merger, it emits gravitational waves at characteristic frequencies known as quasinormal modes (QNMs). In the eikonal limit, these modes are governed…
Black Hole Photon Rings Saturate the Quantum Chaos Bound
D. Giataganas, G. F. Giudice, A. Kehagias +2
We study the quantum chaos bound in the photon ring region surrounding black holes. By evaluating the Lyapunov exponent associated with unstable null geodesics in a broad class of…
Timelike Entanglement Entropy and Renormalization Group Flow Irreversibility
Dimitrios Giataganas
We study holographic c-theorems based on timelike entanglement entropy and show that a timelike c-function captures irreversible renormalization group (RG) flow. We demonstrate tha…
Anisotropic critical points from holography
Dimitrios Giataganas, Umut Gürsoy, Claire Moran +2
We present a comprehensive analysis of generic 5-dimensional Einstein-Maxwell-Dilaton-Axion (EMDA) holographic theories with exponential couplings. We find and classify exact, anal…
Holographic Timelike c-function
Dimitrios Giataganas
The integration of high-energy degrees of freedom along the renormalization group (RG) flow in Poincaré-invariant theories can be captured by a monotonic c-function. For such theor…
Holographic Timelike Entanglement Entropy in Non-relativistic Theories
Mir Afrasiar, Jaydeep Kumar Basak, Dimitrios Giataganas
Timelike entanglement entropy is a complex measure of information that is holographically realized by an appropriate combination of spacelike and timelike extremal surfaces. This m…