133 citations · 1.1k across the 54 of their papers we have counts for
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Exploring Grassmann manifolds in topological systems via quantum distance
Shin-Ming Huang, Dimitrios Giataganas
Quantum states defined over a parameter space form a Grassmann manifold. To capture the geometry of the associated gauge structure, gauge-invariant quantities are essential. We emp…
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…
Timelike Entanglement Entropy and Phase Transitions in non-Conformal Theories
Mir Afrasiar, Jaydeep Kumar Basak, Dimitrios Giataganas
We propose a holographic formalism for a timelike entanglement entropy in non-conformal theories. This pseudoentropy is a complex-valued measure of information, which, in holograph…
Quasinormal Modes and Universality of the Penrose Limit of Black Hole Photon Rings
D. Giataganas, A. Kehagias, A. Riotto
We study the physics of photon rings in a wide range of axisymmetric black holes admitting a separable Hamilton-Jacobi equation for the geodesics. Utilizing the Killing-Yano tensor…