Tootfinder

Holographic Gauss-Bonnet transport
Alex Buchel
https://arxiv.org/abs/2402.16109 https://arxiv.org/pdf/2402.16109

Holographic Gauss-Bonnet transport
We extend the computational framework of \cite{Buchel:2023fst} to analysis of shear and bulk viscosities in generic strongly coupled holographic Gauss-Bonnet gauge theories. The finite Gauss-Bonnet coupling constant encodes holographic plasma with non-equal central charges $c\ne a$ at the ultraviolet fixed point. In a simple model we discuss transport coefficients within the causality window $-\frac12\le \frac{c-a}{c}\le \frac 12$ of the theory.

Achievable Rate Optimization for Stacked Intelligent Metasurface-Assisted Holographic MIMO Communications
Anastasios Papazafeiropoulos, Jiancheng An, Pandelis Kourtessis, Tharmalingam Ratnarajah, Symeon Chatzinotas
https://arxiv.org/abs/2402.16415

Achievable Rate Optimization for Stacked Intelligent Metasurface-Assisted Holographic MIMO Communications
Stacked intelligent metasurfaces (SIM) is a revolutionary technology, which can outperform its single-layer counterparts by performing advanced signal processing relying on wave propagation. In this work, we exploit SIM to enable transmit precoding and receiver combining in holographic multiple-input multiple-output (HMIMO) communications, and we study the achievable rate by formulating a joint optimization problem of the SIM phase shifts at both sides of the transceiver and the covariance matr…

Medizintechnik: 3D-Hologramm erleichtert Eingriffe am Herzen​
Ein interaktives 3D-Echtzeit-Hologramm des Herzens hilft Ärzten im Herz- und Diabeteszentrum NRW während der Operation.​
https://www.

Arbeitsmarkt: Nun trifft die Digitalisierung die Akademiker - Generative KI kann auch hoch qualifizierte Arbeit erledigen. Das Potential, von der Technik ersetzt zu werden, ist mit der neuen KI bei Journalisten und Managern um 20 Prozentpunkte gestiegen, bei Komponisten um 25 Punkte und bei Softwareentwicklern sogar um 30 Punkte - Den größten Zuwachs des bei Stuntmen, da GenAI awahrscheinlich uch Filme produzieren kann. Holger Schmidt in der

Digitale Transformation: Arbeitsmarkt: Nun trifft die Digitalisierung die Akademiker
Generative KI kann auch hoch qualifizierte Arbeit erledigen. Das Potential, von der Technik ersetzt zu werden, ist mit der neuen KI bei Journalisten und Managern um 20 Prozentpunkte gestiegen, bei Komponisten um 25 Punkte und bei Softwareentwicklern sogar um 30 Punkte.

Holographic Gauss-Bonnet transport
Alex Buchel
https://arxiv.org/abs/2402.16109 https://arxiv.org/pdf/2402.16109

Holographic Gauss-Bonnet transport
We extend the computational framework of \cite{Buchel:2023fst} to analysis of shear and bulk viscosities in generic strongly coupled holographic Gauss-Bonnet gauge theories. The finite Gauss-Bonnet coupling constant encodes holographic plasma with non-equal central charges $c\ne a$ at the ultraviolet fixed point. In a simple model we discuss transport coefficients within the causality window $-\frac12\le \frac{c-a}{c}\le \frac 12$ of the theory.

Modular transformations of on-shell actions of (root-)$\text{T}\overline{\text{T}}$ deformed holographic CFTs
Jia Tian, Tengzhou Lai, Farzad Omidi
https://arxiv.org/abs/2404.16354

Modular transformations of on-shell actions of (root-)$\text{T}\overline{\text{T}}$ deformed holographic CFTs
In this study, we examine the modular transformations of the (root-)$\text{T}\overline{\text{T}}$ deformed torus partition function of a two-dimensional CFT (with a gravitational anomaly) from the holographic perspective by computing the on-shell actions of various saddle solutions of the dual gravity theories.

This https://arxiv.org/abs/2402.11016 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Holographic phenomenology via overlapping degrees of freedom
The holographic principle suggests that regions of space contain fewer physical degrees of freedom than would be implied by conventional quantum field theory. Meanwhile, in Hilbert spaces of large dimension $2^n$, it is possible to define $N \gg n$ Pauli algebras that are nearly anti-commuting (but not quite) and which can be thought of as "overlapping degrees of freedom". We propose to model the phenomenology of holographic theories by allowing field-theory modes to be overlapping, and derive …

Entanglement islands and cutoff branes from path-integral optimization
Ashish Chandra, Zhengjiang Li, Qiang Wen
https://arxiv.org/abs/2402.15836 https://…

Entanglement islands and cutoff branes from path-integral optimization
Recently it was proposed that, the AdS/BCFT correspondence can be simulated by a holographic Weyl transformed CFT$_2$, where the cut-off brane plays the role of the Karch-Randall (KR) brane \cite{Basu:2022crn}. In this paper, we focus on the Weyl transformation that optimizes the path integral computation of the reduced density matrix for a single interval in a holographic CFT$_2$. When we take the limit that one of the endpoint of the interval goes to infinity (a half line), such a holographic…

Entanglement islands and cutoff branes from path-integral optimization
Ashish Chandra, Zhengjiang Li, Qiang Wen
https://arxiv.org/abs/2402.15836 https://…

Entanglement islands and cutoff branes from path-integral optimization
Recently it was proposed that, the AdS/BCFT correspondence can be simulated by a holographic Weyl transformed CFT$_2$, where the cut-off brane plays the role of the Karch-Randall (KR) brane \cite{Basu:2022crn}. In this paper, we focus on the Weyl transformation that optimizes the path integral computation of the reduced density matrix for a single interval in a holographic CFT$_2$. When we take the limit that one of the endpoint of the interval goes to infinity (a half line), such a holographic…

de Sitter Connectivity from Holographic Entanglement
Victor Franken
https://arxiv.org/abs/2403.14889 https://arxiv.org/pdf/2403.14889…

de Sitter Connectivity from Holographic Entanglement
Considering two antipodal observers in de Sitter space, we illustrate how spacetime connectivity between the holographic screens located on the (stretched) horizons emerges from holographic entanglement. To do so, we construct a covariant holographic entanglement entropy prescription in de Sitter space, including quantum corrections. While this prescription is inspired by the bilayer proposal, we argue that the monolayer proposal appears to be inconsistent. Entanglement wedge reconstruction imp…