Tootfinder

pyFAST: A Modular PyTorch Framework for Time Series Modeling with Multi-source and Sparse Data
Zhijin Wang, Senzhen Wu, Yue Hu, Xiufeng Liu
https://arxiv.org/abs/2508.18891 http…

pyFAST: A Modular PyTorch Framework for Time Series Modeling with Multi-source and Sparse Data
Modern time series analysis demands frameworks that are flexible, efficient, and extensible. However, many existing Python libraries exhibit limitations in modularity and in their native support for irregular, multi-source, or sparse data. We introduce pyFAST, a research-oriented PyTorch framework that explicitly decouples data processing from model computation, fostering a cleaner separation of concerns and facilitating rapid experimentation. Its data engine is engineered for complex scenarios…

A Metropolitan-scale Multiplexed Quantum Repeater with Bell Nonlocality
Tian-Xiang Zhu, Chao Zhang, Zhong-Wen Ou, Xiao Liu, Peng-Jun Liang, Xiao-Min Hu, Yun-Feng Huang, Zong-Quan Zhou, Chuan-Feng Li, Guang-Can Guo
https://arxiv.org/abs/2508.17940

A Metropolitan-scale Multiplexed Quantum Repeater with Bell Nonlocality
Quantum repeaters can overcome exponential photon loss in optical fibers, enabling heralded entanglement between distant quantum memories. The definitive benchmark for this entanglement is Bell nonlocality, a cornerstone for device-independent security and foundational tests of quantum mechanics. However, recent metropolitan-scale demonstrations based on single-photon interference (SPI) schemes have been limited to generating low-quality entanglement, falling short of Bell nonlocality certifica…

Spin Correlations in Dark Photon Searches
Jonathan L. Feng, Mi\v{s}a Toman, Eli Welch
https://arxiv.org/abs/2508.18352 https://arxiv.org/pdf/2508.18352

Spin Correlations in Dark Photon Searches
We investigate the spin correlations between production and decay in the process where dark photons $A'$ are produced in pseudoscalar meson decays, for example, $π^0, η\to γA'$, and then decay to fermion pairs, $A' \to f \bar{f}$. This process is the focus of many experimental searches, but spin correlations are typically ignored. We derive analytic results that allow us to quickly scan parameter space and quantify the error made in neglecting spin correlations. In particular, we define a di…

PyPitfall: Dependency Chaos and Software Supply Chain Vulnerabilities in Python
Jacob Mahon, Chenxi Hou, Zhihao Yao
https://arxiv.org/abs/2507.18075 https://

PyPitfall: Dependency Chaos and Software Supply Chain Vulnerabilities in Python
Python software development heavily relies on third-party packages. Direct and transitive dependencies create a labyrinth of software supply chains. While it is convenient to reuse code, vulnerabilities within these dependency chains can propagate through dependencies, potentially affecting down-stream packages and applications. PyPI, the official Python package repository, hosts many packages and lacks a comprehensive analysis of the prevalence of vulnerable dependencies. This paper introduces…

Kilka zdjęć z TromsŸ, fajne miasto turystyczne ale nie zostaliśmy długo.

Poszliśmy na pŸlse (hotdoga), który był mniej smaczny niż na stacji i o wiele droższy. Liczyliśmy potem w restauracji na zupę rybną, ale było menu letnie i dostaliśmy Lasagne, która jak można się spodziewać na północy nie smakowała niczym poza przyprawami. W starej kawiarnii lokalnej od pokoleń, pracowali sami studenci i nie było lokalnych wypieków, a kawa nawet nie była z norweskiej palarni, więc tego no...

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Unraveling dark Higgs mechanism via dark photon production at an e^ e^- collider
Song Li, Jin Min Yang, Mengchao Zhang, Yang Zhang, Rui Zhu
https://arxiv.org/abs/2506.20208

Unraveling dark Higgs mechanism via dark photon production at an e^+ e^- collider
In the phenomenology study of dark photon, its mass origin is usually not considered. But in the theory construction, its mass is often generated via a dark Higgs mechanism, which predicts a dark Higgs particle. In this work, we study the impact of such a light (non-decoupled) dark Higgs particle in the collider detection of the dark photon. Assuming both the dark photon and dark Higgs decay invisibly, the search for dark photon via its photon-associated production would be affected by the dark…

En artikel där jag går igenom en del forskning som jag även tar upp i inledning av avsnitt 2 kring talangutveckling som släpps på onsdag.
I den här artikeln förklarar jag också varför en översiktsartikel som ofta refereras som bevis för att vi inte vet vem som kommer bli bäst inte är direkt relevant när man pratar om nivåindelning eller selektering inom föreningsidrotten.
Vilka lyckas av de mest talangfulla 4 procenten?

Vilka lyckas av de mest talangfulla 4 procenten?
I veckan släppte jag och Wille det första av preliminärt tre podcastavsnitt kring talangutveckling. Du kan lyssna på det avsnittet direkt på Tyngres hemsida eller så kan du ladda ner avsnitt 501 av Tyngre Träningssnack i din favoritapp för poddar. I del 2 av podden så öppnar jag upp med att berätta om forskningsdata från […]

QUEENS: An Open-Source Python Framework for Solver-Independent Analyses of Large-Scale Computational Models
Jonas Biehler, Jonas Nitzler, Sebastian Brandst\"ater, Maximilian Dinkel, Volker Gravemeier, Lea J. H\"ausel, Gil Robalo Rei, Harald Willmann, Barbara Wirthl, Wolfgang A. Wall
https://arxiv.org/abs/2508.16316

QUEENS: An Open-Source Python Framework for Solver-Independent Analyses of Large-Scale Computational Models
A growing challenge in research and industrial engineering applications is the need for repeated, systematic analysis of large-scale computational models, for example, patient-specific digital twins of diseased human organs: The analysis requires efficient implementation, data, resource management, and parallelization, possibly on distributed systems. To tackle these challenges and save many researchers from annoying, time-consuming tasks, we present QUEENS (Quantification of Uncertain Effects …

Generating Cylindrical Vector {\gamma} Rays via Beam-Target Interactions: Towards Structured Light at High Energies
Yue Cao, Kun Xue, Si-Man Liu, Zhong-Peng Li, Li-Xiang Hu, Xin-Yu Liu, Zhen-Ke Dou, Feng Wan, Qian Zhao, Tong-Pu Yu, Jian-Xing Li
https://arxiv.org/abs/2508.16220

Generating Cylindrical Vector γ Rays via Beam-Target Interactions: Towards Structured Light at High Energies
Structured γ rays, particularly cylindrical vector γ rays, offer promising tools for sub-nuclear imaging and polarization-sensitive probes in fundamental research and applications, but conventional optical methods face great challenges at such photon energy. Here, we put forward a novel method generating such γ rays through relativistic beam-target interactions. For instance, radially polarized γ rays can be generated by using a dense electron beam striking a multifoil target. We find that …

Electron-muon conversion in nuclei and rare decays induced by LFV dark photon
Alexey S. Zhevlakov, Sergey Kuleshov, Valery E. Lyubovitskij, Evgenie O. Oleynik
https://arxiv.org/abs/2507.17733

Electron-muon conversion in nuclei and rare decays induced by LFV dark photon
We study lepton flavor violation (LFV) effects occurring in the $e-μ$ conversion in nuclei and in the rare radiative decays $η(η') \to γμe$ of the $η$ and $η'$ mesons with a special impact of the sub-GeV mass vector mediator (dark photon). In the case of the lepton conversion we make estimates for running and future experiments operating with electron beams at fixed target. Obtained results are implemented in analysis of the LFV decays $η(η') \to γμe$. In particular, we derive the fo…