Tootfinder

Unveiling the role of vector potential in the Aharonov-Bohm effect
Masashi Wakamatsu
https://arxiv.org/abs/2506.07018 https://arxiv.o…

Unveiling the role of vector potential in the Aharonov-Bohm effect
The most popular interpretation of the Aharonov-Bohm (AB) effect is that the electromagnetic potential locally affects the complex phase of a charged particle's wave function in the magnetic field free region. However, since the vector potential is a gauge-variant quantity, not a few researchers suspect that it is just a convenient tool for calculating the force field. This motivates them to explain the AB effect without using the vector potential, which inevitably leads to some sort of non-loc…

Infinity Search: Approximate Vector Search with Projections on q-Metric Spaces
Antonio Pariente, Ignacio Hounie, Santiago Segarra, Alejandro Ribeiro
https://arxiv.org/abs/2506.06557

Infinity Search: Approximate Vector Search with Projections on q-Metric Spaces
Despite the ubiquity of vector search applications, prevailing search algorithms overlook the metric structure of vector embeddings, treating it as a constraint rather than exploiting its underlying properties. In this paper, we demonstrate that in $q$-metric spaces, metric trees can leverage a stronger version of the triangle inequality to reduce comparisons for exact search. Notably, as $q$ approaches infinity, the search complexity becomes logarithmic. Therefore, we propose a novel projectio…

Synthesizer Arturia MiniFreak: Firmware-Update macht ihn zum Vocoder
Arturia spendiert dem MiniFreak das Update auf Version 4.0.0. Damit wird der "algorithmische Synthesizer" zum Vocoder.

Remarks on Higgs bundles twisted by a vector bundle
David Alfaya, Indranil Biswas, Pradip Kumar
https://arxiv.org/abs/2506.06573 https://

Remarks on Higgs bundles twisted by a vector bundle
For any V-twisted Higgs bundle on a compact Riemann surface X, where V is a holomorphic vector bundle of rank two on X, there are two associated Higgs bundles on X, twisted by line bundles, which are constructed using a Hecke transformation on V. We characterize all such pairs of Higgs bundles (twisted by line bundles) given by V-twisted Higgs bundles. Using this characterization, we provide a spectral correspondence for the moduli space, identifying V-twisted Higgs bundles with the direct imag…

Investigation: Russian network engineer Viktor Vedeneev controls thousands of Telegram IP addresses and maintains its servers; his companies have FSB links (Roman Anin/OCCRP)
https://www.occrp.org/en/investigation/telegram-the-fsb-and-the-man-in-t…

Telegram, the FSB, and the Man in the Middle
The technical infrastructure that underpins Telegram is controlled by a man whose companies have collaborated with Russian intelligence services.

This https://arxiv.org/abs/2505.22119 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Massless limit of massive self-interacting vector fields
We study massive self-interacting vector field theories with mass added ``by hand". We show that the massless limit of the quartic self-interacting vector field theory is not smooth. Pathological behavior of the theory is not limited only at the classical level, even at the quantum level unitarity is violated at the two-loop. Using the Vainshtein mechanism, we show that it fails beyond the strong-coupling scale and hence a massless limit is not smooth even in quantum theory.

Vector Boson Fusion Signatures of Superheavy Majorana Neutrinos at Muon Colliders
Parham Dehghani, Mariana Frank, Benjamin Fuks
https://arxiv.org/abs/2506.06159

Vector Boson Fusion Signatures of Superheavy Majorana Neutrinos at Muon Colliders
We investigate the sensitivity of future high-energy muon colliders to heavy Majorana neutrinos, considering both opposite-sign ($μ^+μ^-$) and same-sign ($μ^+μ^+$) collision modes. We focus on $μ^+μ^-$ colliders operating at centre-of-mass energies of 1, 3 and 10~TeV, as well as the proposed $μ$TRISTAN facility at 2~TeV, and we analyse the production of heavy neutrinos via vector boson fusion in the $t$-channel, a mechanism that becomes dominant in the multi-TeV regime. We evaluate its e…

lesmis: Les Misérables coappearances
The network of scene coappearances of characters in Victor Hugo's novel "Les Miserables". Edge weights denote the number of such occurrences.
This network has 77 nodes and 254 edges.
Tags: Social, Fictional, Weighted
https://networks.skewed.de/net/lesmis

Optimization of Bottlenecks in Quantum Graphs Guided by Fiedler Vector-Based Spectral Derivatives
John TM Campbell, John Dooley
https://arxiv.org/abs/2506.07875

Optimization of Bottlenecks in Quantum Graphs Guided by Fiedler Vector-Based Spectral Derivatives
This paper discusses the relationships between the Fiedler vector, the Cheeger constant, and threshold behaviors in networks of quantum resource nodes represented as Quantum Directed Acyclic Graphs (QDAGs). We explore how these mathematical constructs can be applied to understand the dynamics of quantum information flow in QDAGs, especially in the context of routing problems with bottlenecks in graph signal processing, and how new eigenvalue-based rewiring techniques can optimize entanglement d…

This https://arxiv.org/abs/2506.03437 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csIR_…

Quake: Adaptive Indexing for Vector Search
Vector search, the task of finding the k-nearest neighbors of high-dimensional vectors, underpins many machine learning applications, including recommendation systems and information retrieval. However, existing approximate nearest neighbor (ANN) methods perform poorly under dynamic, skewed workloads where data distributions evolve. We introduce Quake, an adaptive indexing system that maintains low latency and high recall in such environments. Quake employs a hierarchical partitioning scheme th…