Tootfinder

Spin Hall effect in the high-resistivity high-entropy alloy AlCrMoW
Jyoti Yadav, Felix Janus, Tiago de Oliveira Schneider, Shalini Sharma, Daniel Schr\"oter, Markus Meinert
https://arxiv.org/abs/2510.09835

Spin Hall effect in the high-resistivity high-entropy alloy AlCrMoW
We study thin films of the high-entropy alloy system Al$_{x}$(CrMoW)$_{1-x}$, grown on Ta seed layers by magnetron co-sputtering. Between $x=0.2$ and $x=0.6$, a resistivity larger than 100$μΩ$cm is achieved, with a peak of 180$μΩ$cm at $x=0.5$. Around the stoichiometric composition AlCrMoW, the alloy forms a bcc solid solution. The harmonic Hall method was used to characterize the spin Hall angle of the alloy series, where a maximum spin Hall angle of $θ= -0.12 \pm 0.01$ is observed for $x…

Direct observation of the X-ray counterpart of the H{\alpha} filaments and of the sloshing spiral in the Perseus galaxy cluster
Adrien Picquenot, Fabio Acero, Valeria Olivares, Michela Negro, Gabriel W. Pratt
https://arxiv.org/abs/2510.09559

Direct observation of the X-ray counterpart of the Hα filaments and of the sloshing spiral in the Perseus galaxy cluster
Deep Chandra observations of the Perseus galaxy cluster have allowed for the discovery of X-ray counterparts to the Hα filamentary structures and of a sloshing spiral. However, both components are extremely faint, and their study is largely hindered by the volume-filling hot intracluster medium (ICM). Using the Poisson General Morphological Component Analysis (pGMCA) algorithm, a blind source separation method adapted for Poissonian statistics, we were able to extract detailed, clean morpholog…

This is only true for some flavors of "big accounts."
A number of the people I follow with thousands of followers are ONLY on the #Fediverse and most of the rest are only here and on Bluesky. I routinely block people here and on Bluesky (and across the bridge) who pull in the sewage from X and dump it in either place.
I'm not really interested in following people that wa…

Symmetry of the refined $q,t$-Catalan polynomials for $\vec{k}$-Dyck paths
Menghao Qu, Yingrui Zhang
https://arxiv.org/abs/2510.08196 https://arxiv.org/pdf…

Symmetry of the refined $q,t$-Catalan polynomials for $\vec{k}$-Dyck paths
Pappe, Paul, and Schilling introduced two combinatorial statistics, depth and ddinv, associated with classical Dyck paths, and proved that the distributions of (area, depth) and (dinv, ddinv) are $q,t$-symmetric by constructing an involution on plane trees. They also provided a new formula for the original $q,t$-Catalan polynomials $C_{n}(q,t)$. We observe that depth is a slight modification of bounce, which was defined by the filling algorithm and ranking algorithm of Xin and the second author…

Dynamic Scheduling in Fiber and Spaceborne Quantum Repeater Networks
Paolo Fittipaldi
https://arxiv.org/abs/2510.05854 https://arxiv.org/pdf/2510.05854

Dynamic Scheduling in Fiber and Spaceborne Quantum Repeater Networks
The problem of scheduling in quantum networks amounts to choosing which entanglement swapping operations to perform to better serve user demand. The choice can be carried out following a variety of criteria (e.g. ensuring all users are served equally vs. prioritizing specific critical applications, adopting heuristic or optimization-based algorithms...), requiring a method to compare different solutions and choose the most appropriate. We present a framework to mathematically formulate the sche…

Bias and Coverage Properties of the WENDy-IRLS Algorithm
Abhi Chawla, David M. Bortz, Vanja Dukic
https://arxiv.org/abs/2510.03365 https://arxiv.org/pdf/25…

Bias and Coverage Properties of the WENDy-IRLS Algorithm
The Weak form Estimation of Nonlinear Dynamics (WENDy) method is a recently proposed class of parameter estimation algorithms that exhibits notable noise robustness and computational efficiency. This work examines the coverage and bias properties of the original WENDy-IRLS algorithm's parameter and state estimators in the context of the following differential equations: Logistic, Lotka-Volterra, FitzHugh-Nagumo, Hindmarsh-Rose, and a Protein Transduction Benchmark. The estimators' performance w…

The beta decay of Tz=-2 64Se and its descendants: the T=2 isobaric multiplet
P. Aguilera, F. Molina, B. Rubio, S. E. A. Orrigo, W. Gelletly, Y. Fujita, J. Agramunt, A. Algora, V. Guadilla, A. Montaner-Piz\'a, A. I. Morales, H. F. Arellano, P. Ascher, B. Blank, M. Gerbaux, J. Giovinazzo, T. Goigoux, S. Gr\'evy, T. Kurtukian Nieto, C. Magron, J. Chiba, D. Nishimura, S. Yagi, H. Oikawa, Y. Takei, D. S. Ahn, P. Doornenbal, N. Fukuda, N. Inabe, T. Kubo, S. Kubono, S. Nishimura, Y. S…

The beta decay of Tz=-2 64Se and its descendants: the T=2 isobaric multiplet
In this paper we present our results on the decay of 64Se. It is the heaviest Tz=-2 nucleus that both beta decays and has a stable mirror partner Tz=+2, thus allowing comparison with charge exchange reaction studies. The beta decays of 64Se and its descendants were studied at the RIKEN Nishina Center (Tokyo, Japan) following their production in the fragmentation of 78Kr on a beryllium target. Beta-delayed gamma-ray and particle radiation was identified for each of the nuclei in the decay chain …

Even Faster Kernel Matrix Linear Algebra via Density Estimation
Rikhav Shah, Sandeep Silwal, Haike Xu
https://arxiv.org/abs/2510.02540 https://arxiv.org/pd…

Even Faster Kernel Matrix Linear Algebra via Density Estimation
This paper studies the use of kernel density estimation (KDE) for linear algebraic tasks involving the kernel matrix of a collection of $n$ data points in $\mathbb R^d$. In particular, we improve upon existing algorithms for computing the following up to $(1+\varepsilon)$ relative error: matrix-vector products, matrix-matrix products, the spectral norm, and sum of all entries. The runtimes of our algorithms depend on the dimension $d$, the number of points $n$, and the target error $\varepsilon…

Colibri: A new tool for fast-flying PDF fits
Mark N. Costantini, Luca Mantani, James M. Moore, Valentina Schutze Sanchez, Maria Ubiali
https://arxiv.org/abs/2510.03391 https://

Colibri: A new tool for fast-flying PDF fits
We present Colibri, an open-source Python code that provides a general and flexible tool for PDF fits. The code is built so that users can implement their own PDF model, and use the built-in functionalities of Colibri for a fast computation of observables. It grants easy access to experimental data, several error propagation methodologies, including the Hessian method, the Monte Carlo replica method, and an efficient numerical Bayesian sampling algorithm. To demonstrate the capabilities of Coli…

Optimal Robust Recourse with $L^p$-Bounded Model Change
Phone Kyaw, Kshitij Kayastha, Shahin Jabbari
https://arxiv.org/abs/2509.21293 https://arxiv.org/pdf…

Optimal Robust Recourse with $L^p$-Bounded Model Change
Recourse provides individuals who received undesirable labels (e.g., denied a loan) from algorithmic decision-making systems with a minimum-cost improvement suggestion to achieve the desired outcome. However, in practice, models often get updated to reflect changes in the data distribution or environment, invalidating the recourse recommendations (i.e., following the recourse will not lead to the desirable outcome). The robust recourse literature addresses this issue by providing a framework fo…