Tootfinder

Simetrik, which uses AI to automate account reconciliation, raised a $30M Series B extension led by a Goldman Sachs Alternatives unit, taking the round to $85M (Bloomberg)
https://www.bloomberg.com/news/articles/20

Path operators and $(q,t)$-tau functions
Houcine Ben Dali, Valentin Bonzom, Maciej Do{\l}\k{e}ga
https://arxiv.org/abs/2506.06036 https://

Path operators and $(q,t)$-tau functions
We construct a new class of operators that act on symmetric functions with two deformation parameters $q$ and $t$. Our combinatorial construction associates each operator with a specific lattice path, whose steps alternate between moving up and down. We demonstrate that positive linear combinations of these operators are the images of Negut elements via a representation of the shuffle algebra acting on the space of symmetric functions. Additionally, we provide a monomial, elementary, and Schur …

Efficient Model Checking for the Alternating-Time {\mu}-Calculus via Effectivity Frames
Daniel Hausmann, Merlin Humml, Simon Prucker, Lutz Schr\"oder
https://arxiv.org/abs/2506.01010

Efficient Model Checking for the Alternating-Time μ-Calculus via Effectivity Frames
The semantics of alternating-time temporal logic (ATL) and the more expressive alternating-time μ-calculus (AMC) is standardly given in terms of concurrent game frames (CGF). The information required to interpret AMC formulas is equivalently represented in terms of effectivity frames in the sense of Pauly; in many cases, this representation is more compact than the corresponding CGF, and in principle allows for faster evaluation of coalitional modalities. In the present work, we investigate wh…

Intra-unit-cell singlet pairing mediated by altermagnetic fluctuations
Yi-Ming Wu, Yuxuan Wang, Rafael M. Fernandes
https://arxiv.org/abs/2506.04356 https:…

Intra-unit-cell singlet pairing mediated by altermagnetic fluctuations
We investigate the superconducting instabilities induced by altermagnetic fluctuations. Because of the non-trivial sublattice structure of the altermagnetic order, shorter-range and longer-range fluctuations favor qualitatively different types of pairing states. Specifically, while the latter stabilize a standard spin-triplet $p$-wave state, just like ferromagnetic fluctuations, the former leads to intra-unit-cell pairing, in which the Cooper pairs are formed by electrons from different sublatt…

Buried unstrained Ge channels: a lattice-matched platform for quantum technology
Davide Costa, Karina Hudson, Patrick Del Vecchio, Lucas E. A. Stehouwer, Alberto Tosato, Davide Degli Esposti, Mario Lodari, Stefano Bosco, Giordano Scappucci
https://arxiv.org/abs/2506.04724

Buried unstrained Ge channels: a lattice-matched platform for quantum technology
Ge and Si strained quantum wells have enabled the most advanced spin-qubit quantum processors, but they are deposited on defective, metamorphic SiGe substrates, which may impact device performance and scaling. Here we introduce an alternative platform, based on a heterojunction between unstrained Ge and a strained SiGe barrier, which is lattice-matched to a Ge substrate. In a structure with a 52-nm-thick strained SiGe barrier, we demonstrate a low-disorder two-dimensional hole gas with a high-m…

Lattice Boltzmann wall boundary conditions for RANS-based simulations with wall functions
Jorge Ponsin, Carlos Lozano
https://arxiv.org/abs/2506.03905 http…

Lattice Boltzmann wall boundary conditions for RANS-based simulations with wall functions
In this study, we investigate wall boundary condition schemes for Lattice Boltzmann simulations of turbulent flows modeled using RANS equations with wall functions. Two alternative schemes are formulated and assessed: a hybrid regularized boundary condition and a slip-velocity bounce-back scheme. Their performance is evaluated using two canonical turbulent flow cases, a fully developed channel flow and a zero-pressure-gradient flat plate boundary layer (BL), selected specifically to isolate and…

This https://arxiv.org/abs/2408.03984 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Fractionalization as an alternate to charge ordering in electronic insulators
Incompressible insulating phases of electronic systems at partial filling of a lattice are often associated with charge ordering that breaks lattice symmetry. The resulting phases have an enlarged unit cell with an effective integer filling. Here we explore the possibility of insulating states - which we dub "Quantum Charge Liquids" (QCL) - at partial lattice filling that preserve lattice translation symmetry. Such QCL phases must necessarily either have gapped fractionally charged excitations …

Her ser vi nok en gang hvordan staten og byråkratiet forsŸker å kontrollere hva unge skal tenke, mene og konsumere. Når Valgdirektoratet advarer mot unges mediebruk, handler det ikke bare om «beskyttelse» – det er også et forsŸk på å styre informasjonsflyten og forme unge til lydige borgere som ikke stiller spŸrsmål ved makta. Staten frykter at unge skal finne alternative stemmer og informasjon utenfor de etablerte kanalene, fordi det utfordrer deres monopol på sannhet og kontroll.
I s…

Introducing multiverse analysis to bibliometrics: The case of team size effects on disruptive research
Christian Leibel, Lutz Bornmann
https://arxiv.org/abs/2506.03726

Introducing multiverse analysis to bibliometrics: The case of team size effects on disruptive research
Although bibliometrics has become an essential tool in the evaluation of research performance, bibliometric analyses are sensitive to a range of methodological choices. Subtle choices in data selection, indicator construction, and modeling decisions can substantially alter results. Ensuring robustness, meaning that findings hold up under different reasonable scenarios, is therefore critical for credible research and research evaluation. To address this issue, this study introduces multiverse an…

Thermodynamic Uncertainty Relation in Hybrid Normal-Superconducting Systems: The Role of superconducting coherence
Franco Mayo, Nahual Sobrino, Rosario Fazio, Fabio Taddei, Michele Governale
https://arxiv.org/abs/2506.02904

Thermodynamic Uncertainty Relation in Hybrid Normal-Superconducting Systems: The Role of superconducting coherence
We study the violation of thermodynamic uncertainty relations (TURs) in hybrid superconducting systems consisting of one superconducting and two normal leads coupled to a central region containing localized levels, focusing on the role of quantum coherence. We first study the simplest setup yielding TUR violations, where the central region is a single-level quantum dot and only one normal lead is connected. In addition to the {\it classical} TUR, we consider an alternative formulation recentl…