Tootfinder

A few days back I tweeted and blogged about the brand-new RFC 9839, and also published the first draft of tiny Go library to help enforce the subsets defined in the RFC. Got lots of useful input on the library and have progressed it enough to do a v0.8.0 release: https://github.com/timbray/rfc9839…

GitHub - timbray/rfc9839: Go-language library to check for problematic Unicode code points
Go-language library to check for problematic Unicode code points - timbray/rfc9839

from my link log —
libu8ident: Unicode security guidelines for programming language identifiers.
https://github.com/rurban/libu8ident
saved 2025-02-13

GitHub - rurban/libu8ident: unicode security guidelines for identifiers
unicode security guidelines for identifiers. Contribute to rurban/libu8ident development by creating an account on GitHub.

Why Are Parsing Actions for Understanding Message Hierarchies Not Random?
Daichi Kato, Ryo Ueda, Yusuke Miyao
https://arxiv.org/abs/2506.22366 https://

Why Are Parsing Actions for Understanding Message Hierarchies Not Random?
If humans understood language by randomly selecting parsing actions, it might have been necessary to construct a robust symbolic system capable of being interpreted under any hierarchical structure. However, human parsing strategies do not seem to follow such a random pattern. Why is that the case? In fact, a previous study on emergent communication using models with hierarchical biases have reported that agents adopting random parsing strategies$\unicode{x2013}$ones that deviate significantly …

Evidence of Titanate Clouds in the Day-side Atmosphere of the Ultra-Hot Jupiter WASP-121b
Suman Saha, James S. Jenkins
https://arxiv.org/abs/2508.20022 https://

Evidence of Titanate Clouds in the Day-side Atmosphere of the Ultra-Hot Jupiter WASP-121b
The day-side atmospheres of the hottest ultra-hot Jupiters (UHJs) have long been subject to speculation about cloud formation, often without direct observational evidence. Here, we present a detailed analysis of the panchromatic day-side emission spectrum of WASP-121b$\unicode{x2014}$one of the hottest known UHJs$\unicode{x2014}$covering a broad wavelength range of $\sim$0.6-5.1$\unicode{x00B5}$m, based on archival JWST observations from NIRISS and NIRSpec/G396H. We report statistically signifi…

«Unicode is good. If you’re designing a data structure or protocol that has text fields, they should contain #Unicode characters encoded in #UTF8. There’s another question, though: “Which Unicode characters?” The answer is “Not all of them, please exclude some.”
This issue keeps coming up, so [

Three small announcements:
1. RFC 9839, a guide to which Unicode characters you should never use: https://www.rfc-editor.org/rfc/rfc9839.html
2. Blog piece with background and context, “RFC 9839 and Bad Unicode”:

Unveiling Unicode's Unseen Underpinnings in Undermining Authorship Attribution
Robert Dilworth
https://arxiv.org/abs/2508.15840 https://arxiv.org/pdf/2…

Unveiling Unicode's Unseen Underpinnings in Undermining Authorship Attribution
When using a public communication channel -- whether formal or informal, such as commenting or posting on social media -- end users have no expectation of privacy: they compose a message and broadcast it for the world to see. Even if an end user takes utmost precautions to anonymize their online presence -- using an alias or pseudonym; masking their IP address; spoofing their geolocation; concealing their operating system and user agent; deploying encryption; registering with a disposable phone…

Thermodynamics in a split Hilbert space: Quantum impurity at the edge of a one-dimensional superconductor
Pradip Kattel, Abay Zhakenov, Natan Andrei
https://arxiv.org/abs/2508.19330

Thermodynamics in a split Hilbert space: Quantum impurity at the edge of a one-dimensional superconductor
We present a thermodynamic description of a single magnetic impurity at the edge of a superconducting wire. The impurity exhibits four phases $\unicode{x2014}$ Kondo, Yu-Shiba-Rusinov (YSR) I and II, and local moment $\unicode{x2014}$ a phase diagram richer than in the gapless case, contrary to the expectation that the effects of impurities in gapped hosts are less consequential. We derive the impurity contribution to free energy $F_{\rm imp}(T)$ and entropy in each phase: in Kondo phase, the e…

Taylor$\unicode{x2013}$Aris dispersion of active particles in oscillatory channel flow
Bohan Wang, Weiquan Jiang, Li Zeng, Zi Wu, Ping Wang
https://arxiv.org/abs/2507.18241 http…

Taylor$\unicode{x2013}$Aris dispersion of active particles in oscillatory channel flow
Mass dispersion in oscillatory flows is intimately linked to various environmental and biological processes, offering a distinct contrast to dispersion in steady flows due to the periodic expansion and contraction of particle patches. In this study, we investigate the Taylor$\unicode{x2013}$Aris dispersion of active particles in laminar oscillatory flows between parallel plates. Two complementary approaches are employed: a two-time-variable expansion of the Smoluchowski equation is used to faci…

unicodelang: Languages spoken by country (2015)
A bipartite network of languages and the countries in which they are spoken, as estimated by Unicode. Edges are weighted by the proportion of the given country's population that is literate in a particular language.
This network has 868 nodes and 1255 edges.
Tags: Informational, Relatedness, Weighted

Interesting… 🤔 "ICU4X - Solving i18n for client-side and resource-constrained environments" https://icu4x.unicode.org/
> Why ICU4X?
> Small and fast
> ICU4X floats like a butterfly and stings like a bee
😅🦋🐝

from my link log —
The modern text rendering pipeline: unicode, bidi, segmentation, shaping, …
https://www.newroadoldway.com/text1.html
saved 2025-06-24

Microcanonical simulated annealing: Massively parallel Monte Carlo simulations with sporadic random-number generation
M. Bernaschi, L. A. Fernandez, I. Gonz\'alez-Adalid Pemart\'in, E. Marinari, V. Martin-Mayor, G. Parisi, F. Ricci-Tersenghi, J. J. Ruiz-Lorenzo, D. Yllanes
https://arxiv.org/abs/2506.16240

Microcanonical simulated annealing: Massively parallel Monte Carlo simulations with sporadic random-number generation
Numerical simulations of models and theories that describe complex experimental systems $\unicode{x2014}$in fields like high-energy and condensed-matter physics$\unicode{x2014}$ are becoming increasingly important. Examples include lattice gauge theories, which can describe, among others, quantum chromodynamics (the Standard Model description of strong interactions between elementary particles), and spin-glass systems. Beyond fundamental research, these computational methods also find practical…

Landmark-Assisted Monte Carlo Planning
David H. Chan, Mark Roberts, Dana S. Nau
https://arxiv.org/abs/2508.11493 https://arxiv.org/pdf/2508.11493

Landmark-Assisted Monte Carlo Planning
Landmarks$\unicode{x2013}$conditions that must be satisfied at some point in every solution plan$\unicode{x2013}$have contributed to major advancements in classical planning, but they have seldom been used in stochastic domains. We formalize probabilistic landmarks and adapt the UCT algorithm to leverage them as subgoals to decompose MDPs; core to the adaptation is balancing between greedy landmark achievement and final goal achievement. Our results in benchmark domains show that well-chosen la…

Euclidean Distance Deflation Under High-Dimensional Heteroskedastic Noise
Keyi Li, Yuval Kluger, Boris Landa
https://arxiv.org/abs/2507.18520 https://arxiv…

Euclidean Distance Deflation Under High-Dimensional Heteroskedastic Noise
Pairwise Euclidean distance calculation is a fundamental step in many machine learning and data analysis algorithms. In real-world applications, however, these distances are frequently distorted by heteroskedastic noise$\unicode{x2014}$a prevalent form of inhomogeneous corruption characterized by variable noise magnitudes across data observations. Such noise inflates the computed distances in a nontrivial way, leading to misrepresentations of the underlying data geometry. In this work, we addre…

It has been 0 days since the last unicode fuckup ....
Man, 2025 und es gibt grosse Firmen die noch immer kein sauberes konsistentes Encoding von nicht-ASCII Zeichen hinbekommen.

MMHU: A Massive-Scale Multimodal Benchmark for Human Behavior Understanding
Renjie Li, Ruijie Ye, Mingyang Wu, Hao Frank Yang, Zhiwen Fan, Hezhen Hu, Zhengzhong Tu
https://arxiv.org/abs/2507.12463

MMHU: A Massive-Scale Multimodal Benchmark for Human Behavior Understanding
Humans are integral components of the transportation ecosystem, and understanding their behaviors is crucial to facilitating the development of safe driving systems. Although recent progress has explored various aspects of human behavior$\unicode{x2014}$such as motion, trajectories, and intention$\unicode{x2014}$a comprehensive benchmark for evaluating human behavior understanding in autonomous driving remains unavailable. In this work, we propose $\textbf{MMHU}$, a large-scale benchmark for hu…

Breaking the Baryon Density$\unicode{x2013}$Hubble Constant Degeneracy in Fast Radio Burst Applications with Associated Gravitational Waves
Joscha N. Jahns-Schindler, Laura G. Spitler
https://arxiv.org/abs/2508.14434

Breaking the Baryon Density$\unicode{x2013}$Hubble Constant Degeneracy in Fast Radio Burst Applications with Associated Gravitational Waves
Fast Radio Bursts (FRBs) are a unique probe of the cosmos, owing to dispersion caused by free electrons in the intergalactic medium (IGM). Two of the main quantities of interest are degenerate: the density of matter $Ω_\mathrm{b}f_\mathrm{d}$ outside of galaxies and the Hubble constant $H_0$. Here, we present a new possibility of breaking the degeneracy without invoking early Universe priors on $Ω_\mathrm{b}$. Assuming some FRBs originate in compact object mergers, the combination of dispersi…

The Double-edged Sword of LLM-based Data Reconstruction: Understanding and Mitigating Contextual Vulnerability in Word-level Differential Privacy Text Sanitization
Stephen Meisenbacher, Alexandra Klymenko, Andreea-Elena Bodea, Florian Matthes
https://arxiv.org/abs/2508.18976

The Double-edged Sword of LLM-based Data Reconstruction: Understanding and Mitigating Contextual Vulnerability in Word-level Differential Privacy Text Sanitization
Differentially private text sanitization refers to the process of privatizing texts under the framework of Differential Privacy (DP), providing provable privacy guarantees while also empirically defending against adversaries seeking to harm privacy. Despite their simplicity, DP text sanitization methods operating at the word level exhibit a number of shortcomings, among them the tendency to leave contextual clues from the original texts due to randomization during sanitization $\unicode{x2013}$…

If your initial thought on reading about the "Initial Teaching Alphabet" is to check on Unicode status, please see: https://www.unicode.org/L2/L2025/25010-script-wg-report.pdf

The Unicode character 🗿 (U 1F5FF) is named "Moyai" which I thought it was typo mistake for "Moai" which are the stone statues in Easter Island, Chile.
Turns "Moyai" are statues in Niijima, Japan which were inspired on the ones from Easter Island.
This makes me a little disappointed but it makes me very happy that the Japanese like our statues.
#chile

Poset-Markov Channels: Capacity via Group Symmetry
Eray Unsal Atay, Eitan Levin, Venkat Chandrasekaran, Victoria Kostina
https://arxiv.org/abs/2506.19305 h…

Poset-Markov Channels: Capacity via Group Symmetry
Computing channel capacity is in general intractable because it is given by the limit of a sequence of optimization problems whose dimensionality grows to infinity. As a result, constant-sized characterizations of feedback or non-feedback capacity are known for only a few classes of channels with memory. This paper introduces poset-causal channels$\unicode{x2014}$a new formalism of a communication channel in which channel inputs and outputs are indexed by the elements of a partially ordered set…

unicodelang: Languages spoken by country (2015)
A bipartite network of languages and the countries in which they are spoken, as estimated by Unicode. Edges are weighted by the proportion of the given country's population that is literate in a particular language.
This network has 868 nodes and 1255 edges.
Tags: Informational, Relatedness, Weighted

oh you know, just being pedantic about the unicode standard in the wee hours.
as you do.

@… There’s some weird shit in the dusty corners of Unicode: https://www.unicode.org/charts/PDF/U1FB00.pdf

haha, i like to poison my personal data - among others - by using a random combination of unicode homoglyphs. this is a new result on a package i got delivered.

OSTRICH2: Solver for Complex String Constraints
Matthew Hague, Denghang Hu, Artur Je\.z, Anthony W. Lin, Oliver Markgraf, Philipp R\"ummer, Zhilin Wu
https://arxiv.org/abs/2506.14363

OSTRICH2: Solver for Complex String Constraints
We present OSTRICH2, the latest evolution of the SMT solver OSTRICH for string constraints. OSTRICH2 supports a wide range of complex functions on strings and provides completeness guarantees for a substantial fragment of string constraints, including the straight-line fragment and the chain-free fragment. OSTRICH2 provides full support for the SMT-LIB theory of Unicode strings, extending the standard with several unique features not found in other solvers: among others, parsing of ECMAScript r…

Emergent Semantics Beyond Token Embeddings: Transformer LMs with Frozen Visual Unicode Representations
A. Bochkov
https://arxiv.org/abs/2507.04886 https://…

Emergent Semantics Beyond Token Embeddings: Transformer LMs with Frozen Visual Unicode Representations
Understanding the locus of semantic representation in large language models (LLMs) is crucial for interpretability and architectural innovation. The dominant paradigm posits that trainable input embeddings serve as foundational "meaning vectors." This paper challenges that view. We construct Transformer models where the embedding layer is entirely frozen, with vectors derived not from data, but from the visual structure of Unicode glyphs. These non-semantic, precomputed visual embeddings are fi…

Universal Jailbreak Suffixes Are Strong Attention Hijackers
Matan Ben-Tov, Mor Geva, Mahmood Sharif
https://arxiv.org/abs/2506.12880 https://

Universal Jailbreak Suffixes Are Strong Attention Hijackers
We study suffix-based jailbreaks$\unicode{x2013}$a powerful family of attacks against large language models (LLMs) that optimize adversarial suffixes to circumvent safety alignment. Focusing on the widely used foundational GCG attack (Zou et al., 2023), we observe that suffixes vary in efficacy: some markedly more universal$\unicode{x2013}$generalizing to many unseen harmful instructions$\unicode{x2013}$than others. We first show that GCG's effectiveness is driven by a shallow, critical mechani…

Replaced article(s) found for math.MG. https://arxiv.org/list/math.MG/new
[1/1]:
- A note on Erd\H{o}s matrices and Marcus\unicode{x2013}Ree inequality
Aman Kushwaha, Raghavendra Tripathi

A Test for Jumps in Metric-Space Conditional Means
David Van Dijcke
https://arxiv.org/abs/2507.04560 https://arxiv.org/pdf/2507.04560…

A Test for Jumps in Metric-Space Conditional Means
Standard methods for detecting discontinuities in conditional means are not applicable to outcomes that are complex, non-Euclidean objects like distributions, networks, or covariance matrices. This article develops a nonparametric test for jumps in conditional means when outcomes lie in a non-Euclidean metric space. Using local Fréchet regression$\unicode{x2014}$which generalizes standard regression to metric-space valued data$\unicode{x2014}$the method estimates a mean path on either side of …

This https://arxiv.org/abs/2504.09432 has been replaced.
initial toot: https://mastoxiv.page/@a…

Nanoscale Quantum Imaging of Spin Dynamics using a Hybrid 2D/3D System
Spin defects in solids offer promising platforms for quantum sensing and memory due to their long coherence times and compatibility with quantum networks. Here, we integrate a single nitrogen-vacancy (NV) center in diamond with scanning probe microscopy to discover, read out, and spatially map arbitrary spin-based quantum sensors at the nanoscale. Using the boron vacancy (V$_\mathrm{B}^-$) center in hexagonal boron nitride$\unicode{x2013}$an emerging two-dimensional spin system$\unicode{x2013}$…

Slip electron flow in GaAs microscale constrictions
Daniil I. Sarypov, Dmitriy A. Pokhabov, Arthur G. Pogosov, Evgeny Yu. Zhdanov, Andrey A. Shevyrin, Alexander A. Shklyaev, Askhat K. Bakarov
https://arxiv.org/abs/2506.10276

Slip electron flow in GaAs microscale constrictions
Hydrodynamic electron transport in solids, governed by momentum-conserving electron-electron collisions, offers a unique framework to explore collective phenomena. Within this framework, correlated electron motion is modeled as viscous fluid flow, with viscosity serving as the interaction parameter. Advances in electron hydrodynamics remain constrained by two unresolved issues: the questionable existence of perfect boundary slip$\unicode{x2013}$a hallmark of frictionless transport$\unicode{x201…

EmbAdvisor: Adaptive Cache Management for Sustainable LLM Serving
Yuyang Tian, Desen Sun, Yi Ding, Sihang Liu
https://arxiv.org/abs/2505.23970 https://

EmbAdvisor: Adaptive Cache Management for Sustainable LLM Serving
As large language models (LLMs) become widely used, their environmental impact$\unicode{x2014}$especially carbon emissions$\unicode{x2014}$has attracted more attention. Prior studies focus on compute-related carbon emissions. In this paper, we find that storage is another key contributor. LLM caching, which saves and reuses KV caches for repeated context, reduces operational carbon by avoiding redundant computation. However, this benefit comes at the cost of embodied carbon from high-capacity, …

unicodelang: Languages spoken by country (2015)
A bipartite network of languages and the countries in which they are spoken, as estimated by Unicode. Edges are weighted by the proportion of the given country's population that is literate in a particular language.
This network has 868 nodes and 1255 edges.
Tags: Informational, Relatedness, Weighted

This https://arxiv.org/abs/2503.05651 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_grqc_…

Inverting no-hair theorems: How requiring General Relativity solutions restricts scalar-tensor theories
Black hole solutions in general scalar-tensor theories are known to permit hair, i.e. non-trivial scalar profiles and/or metric solutions different from the ones of General Relativity (GR). Imposing that some such solutions$\unicode{x2013}$e.g. Schwarzschild or de Sitter solutions motivated in the context of black hole physics or cosmology$\unicode{x2013}$should exist, the space of scalar-tensor theories is strongly restricted. Here we investigate precisely what these restrictions are within ge…

Universal Jailbreak Suffixes Are Strong Attention Hijackers
Matan Ben-Tov, Mor Geva, Mahmood Sharif
https://arxiv.org/abs/2506.12880 https://

Universal Jailbreak Suffixes Are Strong Attention Hijackers
We study suffix-based jailbreaks$\unicode{x2013}$a powerful family of attacks against large language models (LLMs) that optimize adversarial suffixes to circumvent safety alignment. Focusing on the widely used foundational GCG attack (Zou et al., 2023), we observe that suffixes vary in efficacy: some markedly more universal$\unicode{x2013}$generalizing to many unseen harmful instructions$\unicode{x2013}$than others. We first show that GCG's effectiveness is driven by a shallow, critical mechani…

Computable Bounds for Strong Approximations with Applications
Haoyu Ye, Morgane Austern
https://arxiv.org/abs/2508.03833 https://arxiv.org/pdf/2508.03833…

Computable Bounds for Strong Approximations with Applications
The Komlós$\unicode{x2013}$Major$\unicode{x2013}$Tusnády (KMT) inequality for partial sums is one of the most celebrated results in probability theory. Yet its practical application is hindered by its dependence on unknown constants. This paper addresses this limitation for bounded i.i.d. random variables. At the cost of an additional logarithmic factor, we propose a computable version of the KMT inequality that depends only on the variables' range and standard deviation. We also derive an em…

Non-programmers Assessing AI-Generated Code: A Case Study of Business Users Analyzing Data
Yuvraj Virk, Dongyu Liu
https://arxiv.org/abs/2508.06484 https://

Non-programmers Assessing AI-Generated Code: A Case Study of Business Users Analyzing Data
Non-technical end-users increasingly rely on AI code generation to perform technical tasks like data analysis. However, large language models (LLMs) remain unreliable, and it is unclear whether end-users can effectively identify model errors $\unicode{x2014}$ especially in realistic and domain-specific scenarios. We surveyed marketing and sales professionals to assess their ability to critically evaluate LLM-generated analyses of marketing data. Participants were shown natural language explanat…

Measurement of the Dispersion$\unicode{x2013}$Galaxy Cross-Power Spectrum with the Second CHIME/FRB Catalog
Haochen Wang, Kiyoshi Masui, Shion Andrew, Emmanuel Fonseca, B. M. Gaensler, R. C. Joseph, Victoria M. Kaspi, Bikash Kharel, Adam E. Lanman, Calvin Leung, Lluis Mas-Ribas, Juan Mena-Parra, Kenzie Nimmo, Aaron B. Pearlman, Ue-Li Pen, J. Xavier Prochaska, Ryan Raikman, Kaitlyn Shin, Seth R. Siegel, Kendrick M. Smith, Ingrid H. Stairs

Measurement of the Dispersion$\unicode{x2013}$Galaxy Cross-Power Spectrum with the Second CHIME/FRB Catalog
The dispersion of extragalactic fast radio bursts (FRBs) can serve as a powerful probe of the diffuse plasma between and surrounding galaxies, which contains most of the Universe's baryons. By cross-correlating the dispersion of background FRBs with the locations of foreground galaxies, we can study the relative spatial distributions of plasma and galaxies on scales of 0.1 to 50 Mpc, which are strongly affected by feedback processes in galaxy formation. Here we present the measurement of the di…

unicodelang: Languages spoken by country (2015)
A bipartite network of languages and the countries in which they are spoken, as estimated by Unicode. Edges are weighted by the proportion of the given country's population that is literate in a particular language.
This network has 868 nodes and 1255 edges.
Tags: Informational, Relatedness, Weighted

Avalanching together: A model for sympathetic flaring
Louis-Simon Guit\'e, Paul Charbonneau, Antoine Strugarek
https://arxiv.org/abs/2506.23889 https:/…

Avalanching together: A model for sympathetic flaring
Avalanche models running in a self-organized critical regime have proven powerful in reproducing the power-law distributions and scale invariance that characterize the statistical properties of solar flares. They are often interpreted as representing an individual active region of the Sun. As a result, this class of models has rarely been applied to describe sympathetic flares $\unicode{x2014}$ solar eruptions that occur in close spatial and temporal proximity, seemingly driven by their mutual …

A Highly Carbon-Rich Dayside and Disequilibrium Chemistry in the Ultra-Hot Jupiter WASP-19b
Suman Saha, James S. Jenkins
https://arxiv.org/abs/2507.02797 h…

A Highly Carbon-Rich Dayside and Disequilibrium Chemistry in the Ultra-Hot Jupiter WASP-19b
Ultra-hot Jupiters (UHJs) offer exceptional opportunities for detailed atmospheric characterization via emission spectroscopy. Here we present a comprehensive analysis of the dayside atmosphere of WASP-19b$\unicode{x2014}$one of the shortest-period UHJs$\unicode{x2014}$using archival JWST NIRSpec/PRISM observations spanning 0.6-5.3 $μ$m. We report robust detections of H$_2$O (16.44 $σ$), CO (5.47 $σ$), and CO$_2$ (10.72 $σ$), along with marginal detections of CH$_4$ (3.76 $σ$) and C$_2$H$_…

This https://arxiv.org/abs/2505.24299 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Iion-motion simulations of a plasma-wakefield experiment at FLASHForward
In plasma-based acceleration, an ultra-relativistic particle bunch$\unicode{x2014}$or an intense laser beam$\unicode{x2014}$is used to expel electrons from its propagation path, forming a wake that is devoid of electrons. The ions, being significantly more massive, are often assumed to be stationary. However, both theory and simulations suggest that any sufficiently dense electron bunch can trigger ion motion, and its effect must be taken into account. We simulate beam-driven plasma wakefields …

unicodelang: Languages spoken by country (2015)
A bipartite network of languages and the countries in which they are spoken, as estimated by Unicode. Edges are weighted by the proportion of the given country's population that is literate in a particular language.
This network has 868 nodes and 1255 edges.
Tags: Informational, Relatedness, Weighted

unicodelang: Languages spoken by country (2015)
A bipartite network of languages and the countries in which they are spoken, as estimated by Unicode. Edges are weighted by the proportion of the given country's population that is literate in a particular language.
This network has 868 nodes and 1255 edges.
Tags: Informational, Relatedness, Weighted

unicodelang: Languages spoken by country (2015)
A bipartite network of languages and the countries in which they are spoken, as estimated by Unicode. Edges are weighted by the proportion of the given country's population that is literate in a particular language.
This network has 868 nodes and 1255 edges.
Tags: Informational, Relatedness, Weighted

unicodelang: Languages spoken by country (2015)
A bipartite network of languages and the countries in which they are spoken, as estimated by Unicode. Edges are weighted by the proportion of the given country's population that is literate in a particular language.
This network has 868 nodes and 1255 edges.
Tags: Informational, Relatedness, Weighted

Iion-motion simulations of a plasma-wakefield experiment at FLASHForward
D. Kalvik, P. Drobniak, F. Pe\~na, C. A. Lindstr{\o}m, J. Beinortaite, L. Boulton, P. Caminal, J. Garland, G. Loisch, J. B. Svensson, M. Th\'evenet, S. Wesch, J. Wood, J. Osterhoff R. D'Arcy, S. Diederichs
https://arxiv.org/abs/2505.24299

Iion-motion simulations of a plasma-wakefield experiment at FLASHForward
In plasma-based acceleration, an ultra-relativistic particle bunch$\unicode{x2014}$or an intense laser beam$\unicode{x2014}$is used to expel electrons from its propagation path, forming a wake that is devoid of electrons. The ions, being significantly more massive, are often assumed to be stationary. However, both theory and simulations suggest that any sufficiently dense electron bunch can trigger ion motion, and its effect must be taken into account. We simulate beam-driven plasma wakefields …

unicodelang: Languages spoken by country (2015)
A bipartite network of languages and the countries in which they are spoken, as estimated by Unicode. Edges are weighted by the proportion of the given country's population that is literate in a particular language.
This network has 868 nodes and 1255 edges.
Tags: Informational, Relatedness, Weighted