Tootfinder

$\phi$-Dwarfs: White Dwarfs probe Quadratically Coupled Scalars
Kai Bartnick, Konstantin Springmann, Stefan Stelzl, Andreas Weiler
https://arxiv.org/abs/2509.25305 https://

$ϕ$-Dwarfs: White Dwarfs probe Quadratically Coupled Scalars
We study ultralight scalar fields with quadratic couplings to Standard-Model fermions and derive strong constraints from white-dwarf mass-radius data. Such couplings source scalar profiles inside compact stars, shift fermion masses, and can produce a new ground state of matter. We analyze couplings to electrons and to nucleons, incorporating composition and finite-temperature effects in white dwarf structure and equations of state. We identify two robust observables: (i) forbidden gaps - ranges…

Gestern lernte ich auf unerwartetem Wege über die Entwicklung elektronischer Musik in China (Entwicklung von Instrumenten, Gründung von Festivals, Pioniertätigkeit).

Hybrid ML-RL Approach for Smart Grid Stability Prediction and Optimized Control Strategy
Kazi Sifatul Islam, Anandi Dutta, Shivani Mruthyunjaya
https://arxiv.org/abs/2508.19541 …

Hybrid ML-RL Approach for Smart Grid Stability Prediction and Optimized Control Strategy
Electrical grids are now much more complex due to the rapid integration of distributed generation and alternative energy sources, which makes forecasting grid stability with optimized control a crucial task for operators. Traditional statistical, physics-based, and ML models can learn the pattern of the grid features, but have limitations in optimal strategy control with instability prediction. This work proposes a hybrid ML-RL framework that leverages ML for rapid stability prediction and RL f…

Probing laser-driven surface and subsurface dynamics via grazing-incidence XFEL scattering and diffraction
Lisa Randolph, \"Ozg\"ul \"Ozt\"urk, Dmitriy Ksenzov, Lingen Huang, Thomas Kluge, S. V. Rahul, Victorien Bouffetier, Carsten Baehtz, Mohammadreza Banjafar, Erik Brambrink, Fabien Brieuc, Byoung Ick Cho, Sebastian G\"ode, Tobias Held, Hauke H\"oppner, Gerhard Jakob, Mathias Kl\"aui, Zuzana Kon\^opkov\'a, Changhoo Lee, Gyusang Lee, Mikako Makit…

Probing laser-driven surface and subsurface dynamics via grazing-incidence XFEL scattering and diffraction
We demonstrate a grazing-incidence x-ray platform that simultaneously records time-resolved grazing-incidence small-angle x-ray scattering (GISAXS) and grazing-incidence x-ray diffraction (GID) from a femtosecond laser-irradiated gold film above the melting threshold, with picosecond resolution at an x-ray free-electron laser (XFEL). By tuning the x-ray incidence angle, the probe depth is set to tens of nanometers, enabling depth-selective sensitivity to near-surface dynamics. GISAXS resolves u…

Properties of cluster red-sequence spiral galaxies
Wayne A. Barkhouse (University of North Dakota), Lane M. Kashur (Colorado State University), Moreom Akter (University of North Dakota), Sandanuwan P. Kalawila (University of North Dakota), Gihan L. Gamage (New Mexico State University-Alamogordo), Omar L\'opez-Cruz (Instituto Nacional de Astrofisica, Optica y Electronica)

Properties of cluster red-sequence spiral galaxies
We identify a sample of 324 red and 273 blue face-on spiral galaxies selected from 115 low-redshift (0.014 < z < 0.18) galaxy clusters imaged with CFHT+MegaCam in u- and r-band, KPNO 0.9-meter 2TkA and MOSAIC 8K camera in B and Rc, and images and catalogs extracted from the WINGS survey. Multi-wavelength photometry and spectroscopy were obtained by cross-matching sources with SDSS, GALEX, and WISE datasets. Our main results suggest that up to 45% of optically red spirals are dusty compared to b…

PLEXUS Hand: Lightweight Four-Motor Prosthetic Hand Enabling Precision-Lateral Dexterous Manipulation
Yuki Kuroda, Tomoya Takahashi, Cristian C Beltran-Hernandez, Masashi Hamaya, Kazutoshi Tanaka
https://arxiv.org/abs/2510.09209

PLEXUS Hand: Lightweight Four-Motor Prosthetic Hand Enabling Precision-Lateral Dexterous Manipulation
Electric prosthetic hands should be lightweight to decrease the burden on the user, shaped like human hands for cosmetic purposes, and have motors inside to protect them from damage and dirt. In addition to the ability to perform daily activities, these features are essential for everyday use of the hand. In-hand manipulation is necessary to perform daily activities such as transitioning between different postures, particularly through rotational movements, such as reorienting cards before slot…

Photometric Stability of an EMCCD Camera at 1-s Exposures
I. V. Afanasieva (Special Astrophysical Observatory of the Russian Academy of Sciences), V. G. Orlov (Instituto de Astronomia, Universidad Nacional Autonoma de Mexico), V. I. Ardilanov (Special Astrophysical Observatory of the Russian Academy of Sciences), V. A. Murzin (Special Astrophysical Observatory of the Russian Academy of Sciences), D. V. Oparin (Special Astrophysical Observatory of the Russian Academy of Sciences), A. N.…

Photometric Stability of an EMCCD Camera at 1-s Exposures
We present the results of testing an iXonUltra 888 EMCCDcamera to determine the operating parameters for short-exposure photometry of stars. As a result of the testing, those camera modes were selected in which the temporal instability of the electron multiplication charge does not significantly affect the light curves. In addition, the photometry of the eclipsing variable star ZTFJ 0038+2030, obtained with the Zeiss-1000 telescope of the Special Astrophysical Observatory of the Russian Academy…

Magnetic-Field Control of Tomonaga-Luttinger Liquids in Ta2Pd3Te5 Edge States
Xingchen Guo Anqi Wang, Xiutong Deng, Yupeng Li, Guoan Li, Zhiyuan Zhang, Xiaofan Shi, Xiao Deng, Ziwei Dou, Guangtong Liu, Fanming Qu, Zhijun Wang, Tian Qian, Youguo Shi, Li Lu, Jie Shen
https://arxiv.org/abs/2510.07973 …

Magnetic-Field Control of Tomonaga-Luttinger Liquids in Ta2Pd3Te5 Edge States
Ta2Pd3Te5 is a quasi-one-dimensional transition-metal telluride whose heavy atoms endow the material with strong spin-orbit coupling, while the Fermi level inside the bulk gap makes the low-energy electronic structure highly tunable.Theory and early experiments have already identified a wealth of emergent phases in this platform: an excitonic insulator driven by electron-hole binding, a second-order topological insulator protected by crystalline symmetry, a potential topological-protected quant…

Convex Formulation of the Zero Emission Vessel Route Planning Problem
Antti Ritari, Jani Romanoff, Kari Tammi
https://arxiv.org/abs/2510.04313 https://arxi…

Convex Formulation of the Zero Emission Vessel Route Planning Problem
This paper focuses on the zero emission vessel route planning problem, which deals with cost-effective planning of battery-electric vessel services for predetermined routes. Vessel characteristics (including battery capacity), fleet size, cyclic schedule frequencies, sailing leg speeds, and shore charging infrastructure are jointly optimized. The problem is nonlinear and nonconvex in its original form, which makes it intractable for most real-world instances. The conventional approach in the li…

Guitar Tone Morphing by Diffusion-based Model
Kuan-Yu Chen, Kuan-Lin Chen, Yu-Chieh Yu, Jian-Jiun Ding
https://arxiv.org/abs/2510.07908 https://arxiv.org/p…

Guitar Tone Morphing by Diffusion-based Model
In Music Information Retrieval (MIR), modeling and transforming the tone of musical instruments, particularly electric guitars, has gained increasing attention due to the richness of the instrument tone and the flexibility of expression. Tone morphing enables smooth transitions between different guitar sounds, giving musicians greater freedom to explore new textures and personalize their performances. This study explores learning-based approaches for guitar tone morphing, beginning with LoRA fi…