66 citations · 359 across the 15 of their papers we have counts for
15 papers
Cosmological pole-skipping, shock waves and quantum chaotic dynamics of de Sitter horizons
Yongjun Ahn, Sašo Grozdanov, Hyun-Sik Jeong +1
We present a systematic analysis of pole-skipping for scalar, Maxwell, and gravitational waves in cosmological spacetimes. Specifically, working in empty de Sitter space and in Sch…
Holographic D-brane constructions with dynamical gauge fields
Yongjun Ahn, Matteo Baggioli, Hyun-Sik Jeong +1
Holographic D-brane constructions, governed by the Dirac-Born-Infeld (DBI) action, play a central role in the AdS/CFT correspondence, particularly in applications to quantum chromo…
Simple holographic dual of the Maxwell-Cattaneo model & the fate of KMS symmetry for non-hydrodynamic modes
Yongjun Ahn, Matteo Baggioli, Yanyan Bu +2
Diffusion, as described by Fick's laws, governs the spreading of particles, information, data, and even financial fluctuations. However, due to its parabolic structure, the diffusi…
On pole-skipping with gauge-invariant variables in holographic axion theories
Yongjun Ahn, Viktor Jahnke, Hyun-Sik Jeong +3
We study the pole-skipping phenomenon within holographic axion theories, a common framework for studying strongly coupled systems with chemical potential () and momentum relaxat…
Chiral magnetic waves in strongly coupled Weyl semimetals
Yongjun Ahn, Matteo Baggioli, Yan Liu +1
Propagating chiral magnetic waves (CMW) are expected to exist in chiral plasmas due to the interplay between the chiral magnetic and chiral separation effects induced by the presen…
Inability of linear axion holographic Gubser-Rocha model to capture all the transport anomalies of strange metals
Yongjun Ahn, Matteo Baggioli, Hyun-Sik Jeong +1
In the last decade, motivated by the concept of Planckian relaxation and the possible existence of a quantum critical point in cuprate materials, holographic techniques have been e…
Pole-skipping points in 2D gravity and SYK model
Haiming Yuan, Xian-Hui Ge, Keun-Young Kim +2
We represent the first investigation of pole-skipping on both the gravity and field theory sides. In contrast to the higher dimensional models, there is no momentum degree of freed…
Holography and magnetohydrodynamics with dynamical gauge fields
Yongjun Ahn, Matteo Baggioli, Kyoung-Bum Huh +3
Within the framework of holography, the Einstein-Maxwell action with Dirichlet boundary conditions corresponds to a dual conformal field theory in presence of an external gauge fie…
AdS/Deep-Learning made easy: simple examples
Mugeon Song, Maverick S. H. Oh, Yongjun Ahn +1
Deep learning has been widely and actively used in various research areas. Recently, in the gauge/gravity duality, a new deep learning technique so-called the AdS/Deep-Learning (DL…
Classifying pole-skipping points
Yongjun Ahn, Viktor Jahnke, Hyun-Sik Jeong +3
We clarify general mathematical and physical properties of pole-skipping points. For this purpose, we analyse scalar and vector fields in hyperbolic space. This setup is chosen bec…
Holographic teleportation in higher dimensions
Byoungjoon Ahn, Yongjun Ahn, Sang-Eon Bak +2
We study higher-dimensional traversable wormholes in the context of Rindler-AdS/CFT. The hyperbolic slicing of a pure AdS geometry can be thought of as a topological black hole tha…
Pole-skipping of scalar and vector fields in hyperbolic space: conformal blocks and holography
Yongjun Ahn, Viktor Jahnke, Hyun-Sik Jeong +3
Motivated by the recent connection between pole-skipping phenomena of two point functions and four point out-of-time-order correlators (OTOCs), we study the pole structure of therm…
Linear- resistivity from low to high temperature: axion-dilaton theories
Yongjun Ahn, Hyun-Sik Jeong, Dujin Ahn +1
The linear- resistivity is one of the hallmarks of various strange metals regardless of their microscopic details. Towards understanding this universal property, the holographic…
Scrambling in Hyperbolic Black Holes: shock waves and pole-skipping
Yongjun Ahn, Viktor Jahnke, Hyun-Sik Jeong +1
We study the scrambling properties of -dimensional hyperbolic black holes. Using the eikonal approximation, we calculate out-of-time-order correlators (OTOCs) for a Rindler-…
Thermal diffusivity and butterfly velocity in anisotropic Q-Lattice models
Dujin Ahn, Yongjun Ahn, Hyun-Sik Jeong +3
By using a holographic method we study a relation between the thermal diffusivity () and two quantum chaotic properties, Lyapunov time () and butterfly velocity () i…