Tootfinder

Holographic Communication via Recordable and Reconfigurable Metasurface
Jinzhe Wang, Qinghua Guo, Xiaojun Yuan
https://arxiv.org/abs/2506.19376 https://

Holographic Communication via Recordable and Reconfigurable Metasurface
Holographic surface based communication technologies are anticipated to play a significant role in the next generation of wireless networks. The existing reconfigurable holographic surface (RHS)-based scheme only utilizes the reconstruction process of the holographic principle for beamforming, where the channel sate information (CSI) is needed. However, channel estimation for CSI acquirement is a challenging task in metasurface based communications. In this study, inspired by both the recording…

The holographic dual of the GHZ state
Libo Jiang, Yan Liu
https://arxiv.org/abs/2508.17898 https://arxiv.org/pdf/2508.17898

The holographic dual of the GHZ state
Current holographic research mostly focuses on a subset of quantum systems with a classical gravity dual. Although the precise boundary of this subset remains unknown, certain constraints are recognized; for instance, holographic entropies obey inequalities that are violated by general quantum states such as the GHZ states. This paper, however, presents a gravity dual for GHZ states -- a non-ordinary geometry termed the booklet wormhole. We demonstrate an exact match for all entropy properties …

Emergent statistical mechanics in holographic random tensor networks
Shozab Qasim, Jens Eisert, Alexander Jahn
https://arxiv.org/abs/2508.16570 https://arx…

Emergent statistical mechanics in holographic random tensor networks
Recent years have enjoyed substantial progress in capturing properties of complex quantum systems by means of random tensor networks (RTNs), which form ensembles of quantum states that depend only on the tensor network geometry and bond dimensions. Of particular interest are RTNs on hyperbolic geometries, with local tensors typically chosen from the unitary Haar measure, that model critical boundary states of holographic bulk-boundary dualities. In this work, we elevate static pictures of ensem…

Non-flat Universe with Tsallis holographic dark energy
Artyom V. Astashenok, Alexander S. Tepliakov
https://arxiv.org/abs/2508.16280 https://arxiv.org/pdf/…

Non-flat Universe with Tsallis holographic dark energy
We investigated evolution of metric and density perturbations for Tsallis model of holographic dark energy with energy density $\sim L^{2γ- 4}$, where $L$ is length of event horizon or inverse Hubble parameter and $γ$ is parameter of non-additivity close to $1$. Because holographic dark energy is not an ordinary cosmological fluid but a phenomena caused by boundaries of the universe, the ordinary analysis for perturbations is not suitable. One needs to consider perturbations of the future eve…

Interpolating between Space-like and Time-like Entanglement via Holography
Carlos Nunez, Dibakar Roychowdhury
https://arxiv.org/abs/2507.17805 https://arxi…

Interpolating between Space-like and Time-like Entanglement via Holography
We study entanglement entropy for slab like regions in quantum field theories, using their holographic duals. We focus on the transition between space like and time like separations. By considering boosted subsystems in conformal and confining holographic backgrounds, we identify two classes of extremal surfaces: real ones (Type I) and complex surfaces (Type II). These interpolate between the usual Ryu Takayanagi prescription and its time like generalisations. We derive explicit expressions for…

Carroll Geometry Meets De Sitter Space via Holography
Chris D. A. Blair, Niels A. Obers, Ziqi Yan
https://arxiv.org/abs/2506.19720 https://

Carroll Geometry Meets De Sitter Space via Holography
We explain how to relate the ideas of Carroll geometry, matrix theory on instantonic objects, and infinite boost limits of M-theory. Based on these new insights, we explore the implications for possible holographic constructions involving a de Sitter or flat space bulk. We show that Carroll-like geometry in a hypothetical de Sitter holography mirrors the recently realized important role played by Galilei-like geometry in matrix theory and the AdS/CFT correspondence. This also allows us to gener…

The holographic entanglement pattern of BTZ planar black hole from a thread perspective
Yi-Yu Lin, Dong-Yu Fang, Jie-Chen Jin, Chen-Ye Li
https://arxiv.org/abs/2508.16977 https:…

The holographic entanglement pattern of BTZ planar black hole from a thread perspective
In this paper, we study the holographic quantum entanglement structure in the finite-temperature CFT state/planar BTZ black hole correspondence from the perspective of entanglement threads. Unlike previous studies based on bit threads, these entanglement threads provide a more detailed characterization of the contribution sources to the von Neumann entropy of boundary subregions, in particular by quantitatively deriving the flux function of entanglement threads that traverse the wormhole horizo…

Holographic flavour and neural networks
Veselin G. Filev
https://arxiv.org/abs/2506.20115 https://arxiv.org/pdf/2506.20115

Holographic flavour and neural networks
In holography, flavour probe branes are used to introduce fundamental matter to the AdS/CFT correspondence. At a technical level, the probes are described by extremizing the DBI action and solving the Lagrange-Euler equations of motion. I report on applications of artificial neural networks that allow direct minimization of the regularized DBI action (interpreted as a free energy) without the need to derive and solve the equations of motion. I consider, as examples, magnetic catalysis of chiral…

Energy transport in holographic junctions
Yan Liu, Chuan-Yi Wang
https://arxiv.org/abs/2506.19553 https://arxiv.org/pdf/2506.19553

Energy transport in holographic junctions
We study energy transport in a conformal junction connecting three 2D conformal field theories using the AdS/CFT correspondence. The holographic dual consists of three AdS$_3$ spacetimes joined along the worldsheet of a tensile string anchored at the junction. Within a specific range of string tension, where the bulk solution is uniquely determined, we find that all energy reflection and transmission coefficients vary monotonically with the string tension. Notably, the total energy transmission…

Interior structure of the holographic s p superconductor and chaotic-stable transition near the black hole singularity
Xing-Kun Zhang, Xin Zhao, Zhang-Yu Nie, Ya-Peng Hu, Yu-Sen An
https://arxiv.org/abs/2506.19419

Interior structure of the holographic s + p superconductor and chaotic-stable transition near the black hole singularity
In this work, we investigate the interior structure of a holographic multi-band superconductor with the coexistence of s-wave and p-wave order parameters. Especially, we investigate the singularity structure of this multi-band model. Different from the single p-wave case, the alternation rule is jointly determined by parameters involving both s-wave order and p-wave order. In the coexistence region, we derive the Kasner alternation laws from both analytical and numerical methods which fit each …