Tootfinder

🔧 Key Features
Character Consistency
Maintains appearance of characters or objects across multiple prompts and edits. Enables placing the same character in different environments, showcasing products from multiple angles, or generating consistent brand assets.
✏️ Targeted Transformations
Precise local edits using natural language commands:
Blur backgrounds
Remove objects or stains
Remove people from photos
Alter poses
Add color to black and whit…

PIMBS: Efficient Body Schema Learning for Musculoskeletal Humanoids with Physics-Informed Neural Networks
Kento Kawaharazuka, Takahiro Hattori, Keita Yoneda, Kei Okada
https://arxiv.org/abs/2506.20343

PIMBS: Efficient Body Schema Learning for Musculoskeletal Humanoids with Physics-Informed Neural Networks
Musculoskeletal humanoids are robots that closely mimic the human musculoskeletal system, offering various advantages such as variable stiffness control, redundancy, and flexibility. However, their body structure is complex, and muscle paths often significantly deviate from geometric models. To address this, numerous studies have been conducted to learn body schema, particularly the relationships among joint angles, muscle tension, and muscle length. These studies typically rely solely on data …

AN ACTUALLY A PIECE OF THE MOON
🌚🌘🌖🌒🌝 #moon #moonrock

Infinite Ideal Polyhedra in Hyperbolic 3-Space: Existence and Rigidity
Huabin Ge, Hao Yu, Puchun Zhou
https://arxiv.org/abs/2506.19528 https://

Infinite Ideal Polyhedra in Hyperbolic 3-Space: Existence and Rigidity
In the seminal work [27], Rivin obtained a complete characterization of finite ideal polyhedra in hyperbolic 3-space by the exterior dihedral angles. Since then,the characterization of infinite hyperbolic polyhedra has become an extremely challenging open problem. To resolve this problem, we study ideal circle patterns (ICPs) and use them to characterize infinite ideal polyhedra (IIPs). Specifically, we establish the existence and rigidity of embedded ICPs on the plane. We further prove the uni…

Wow! The tightest of angles beats Berger near side and looks to be the winner.
It must be said that the German back line was not well organized after the turnover and because they're gassed, they kept Bonmati onside and allowed the turn. Fatigue, surely.
#GERESP #EURO2025

Collinear limit of the energy-energy correlator in $e^ e^-$ collisions: transition from perturbative to non-perturbative regimes
Enrico Herrmann, Zhong-Bo Kang, Jani Penttala, Congyue Zhang
https://arxiv.org/abs/2507.17704

Collinear limit of the energy-energy correlator in $e^+ e^-$ collisions: transition from perturbative to non-perturbative regimes
We study the collinear limit of the energy-energy correlator (EEC) in $e^+e^-$ collisions, focusing on the transition from the perturbative QCD regime at relatively large angles to the non-perturbative region at small angles. To describe this transition, we introduce a non-perturbative jet function and perform a global analysis at NNLO+NNLL accuracy using experimental data spanning center-of-mass energies from $Q = 29.0$ to $91.2$ GeV. This marks the first accurate description of the EEC across…

Effects of flame macrostructures on the combustion dynamics of novel counter-rotating radial swirl injector in a model can combustor
SK Thirumalaikumaran, Balasundaram Mohan, Saptarshi Basu
https://arxiv.org/abs/2506.20138

Effects of flame macrostructures on the combustion dynamics of novel counter-rotating radial swirl injector in a model can combustor
This study explores the flame macrostructures observed during self-sustained thermoacoustic oscillations in a model can combustor featuring a novel counter-rotating swirler. The swirler is designed to achieve high shear, distributing 60% of the airflow through the primary passage and 40% through the secondary passage, with radial fuel injection introduced via a central lance. To examine the influence of flame macrostructures on combustion instabilities, the flow expansion angles at the combusto…

Symmetry groups of origami structures
Sara Chari, Andrew Quinn Macauley
https://arxiv.org/abs/2506.19177 https://arxiv.org/pdf/2506.1…

Symmetry groups of origami structures
Origami is the art of folding paper into various patterns without cutting or tearing the paper. By viewing the paper as the complex plane, we iteratively compute and record all intersection points to construct mathematical origami sets. Additionally, we include the various lines to create a repeating pattern that can be viewed as a wallpaper group if the angle set contains fewer than 3 angles. There are 17 wallpaper groups up to isomorphism, so we determine which such groups can be constructed …

Mapping the Photon Detection Efficiency of VUV Sensitive SiPMs from the Ultra-Violet to the Near Infra-Red
Austin de St Croix, Harry Lewis, Kurtis Raymond, Fabrice Reti\`ere, Maia Henriksson-Ward, Giacomo Gallina, Nicholas Morrison, Aileen Zhang
https://arxiv.org/abs/2508.16005

Mapping the Photon Detection Efficiency of VUV Sensitive SiPMs from the Ultra-Violet to the Near Infra-Red
We present a flexible analytic model describing the Photo-Detection Efficiency (PDE) for P-on-N silicon photomultipliers. This model can be used for device characterization, PDE extrapolation from limited data or design optimization. The model uses six device specific parameters to describe PDE for a large range of wavelengths, angles of incidence, voltages and temperatures. Refractive index data taken from literature are inputs to the model, which also allows the prediction of PDE for devices …

Probing Phonon Modes in Reconstructed twisted Homo and Hetero Bilayer System
Sushil Kumar Sahu, Robin Bajaj, Syed Ummair Ali, Ajay Bhut, Roshan Jesus Mathew, Shinjan Mandal, Kenji Watanabe, Takashi Taniguchi, Manish Jain, Chandan Kumar
https://arxiv.org/abs/2506.19669

Probing Phonon Modes in Reconstructed twisted Homo and Hetero Bilayer System
Twist angle engineering in van der Waals homo and hetero-bilayers introduces profound modifications in their electronic, optical and mechanical properties due to lattice reconstruction. In these systems, the interlayer coupling and atomic rearrangement strongly depend on the twist angle, leading to the formation of periodic Moire superlattices. At small twist angles, significant lattice relaxation results in the emergence of domain structures separated by one dimensional soliton networks, influ…

Moir\'e Collapse and Luttinger Liquids In Twisted Anisotropic Homobilayers
D. J. P. de Sousa, Seungjun Lee, Francisco Guinea, Tony Low
https://arxiv.org/abs/2506.19727

Moiré Collapse and Luttinger Liquids In Twisted Anisotropic Homobilayers
We introduce twisted anisotropic homobilayers as a distinct class of moiré systems, characterized by a distinctive ``magic angle", $θ_M$, where both the moiré unit cell and Brillouin zone collapse. Unlike conventional studies of moiré materials, which primarily focus on small lattice misalignments, we demonstrate that this moiré collapse occurs at large twist angles in generic twisted anisotropic homobilayers. The collapse angle, $θ_M$, is likely to give rise quasi-crystal behavior as wel…

Sorta-alt: a short-legged black dog wearing a collar with a glowing red light runs along sunset-lit roads, cutting across views and angles, ending with the dog stopping in profile before running off again. 1982-era synth music accompanies it.
https://beige.party/@amiserabilist/11507322…

On the Distribution of a Two-Dimensional Random Walk with Restricted Angles
Karl-Ludwig Besser
https://arxiv.org/abs/2507.15475 https://

On the Distribution of a Two-Dimensional Random Walk with Restricted Angles
In this paper, we derive the distribution of a two-dimensional (complex) random walk in which the angle of each step is restricted to a subset of the circle. This setting appears in various domains, such as in over-the-air computation in signal processing. In particular, we derive the exact joint and marginal distributions for two steps, numerical solutions for a general number of steps, and approximations for a large number of steps. Furthermore, we provide an exact characterization of the sup…

Did you see the reenactment of the Sunrise III flight with a cute little model at the kids' show? https://academiccloud.social/@imprs_solar/114723459947791480 Meanwhile, all our visitors of course also got to see the real Sunrise III observatory up close. Cer…

Is the $3S$-$2D$ mixing strong for the charmonia $\psi(4040)$ and $\psi(4160)$?
Zi-Long Man, Si-Qiang Luo, Xiang Liu
https://arxiv.org/abs/2507.18536 https://

Is the $3S$-$2D$ mixing strong for the charmonia $ψ(4040)$ and $ψ(4160)$?
In this work, we revisit the $3S$-$2D$ mixing scheme for the charmonia $ψ(4040)$ and $ψ(4160)$. We introduce a coupled-channel mechanism-distinct from the tensor-force contribution in potential models, which alone is insufficient to induce significant mixing-to describe the mixing between these states. Our analysis yields mixing angles of $θ_1=7^\circ$ and $θ_2=10^\circ$, inconsistent with the larger angle inferred from experimental data, such as the di-lectronic widths of the $ψ(4040)$ an…

Dutch angles and real estate
Baywatch Nights 2x22 - A Thousand Words
#RandomBaywatch #lvdlpx #BaywatchNights

Generalized Code Distance through Rotated Logical States in Quantum Error Correction
Valentine Nyirahafashimana, Nurisya Mohd Shah, Umair Abdul Halim, Mohamed Othman
https://arxiv.org/abs/2506.17062

Generalized Code Distance through Rotated Logical States in Quantum Error Correction
We construct rotated logical states by applying rotation operators to stabilizer states, extending the logical basis and modifying stabilizer generators. Rotation operators affect the effective code distance $d_R$, which decays exponentially with rotation angles $(θ, ϕ)$, influencing error correction performance. We quantify the scaling behavior of logical error rates under circuit-level noise, comparing standard depolarizing (SD) and superconducting-inspired (SI) noise models with small and …

Toward Understanding Similarity of Visualization Techniques
Abdulhaq Adetunji Salako, Christian Tominski
https://arxiv.org/abs/2506.17032 https://

Toward Understanding Similarity of Visualization Techniques
The literature describes many visualization techniques for different types of data, tasks, and application contexts, and new techniques are proposed on a regular basis. Visualization surveys try to capture the immense space of techniques and structure it with meaningful categorizations. Yet, it remains difficult to understand the similarity of visualization techniques in general. We approach this open research question from two angles. First, we follow a model-driven approach that is based on d…

🇺🇦 Auf radioeins läuft...
DJ Tennis feat. Fink:
🎵 Certain Angles
#NowPlaying #DJTennis #Fink
https://tennisdj.bandcamp.com/album/certain-angles
https://open.spotify.com/track/7ohuxQB16cbadniXIiUOmQ

Higher Chern bands in helical homotrilayer transition metal dichalcogenides
Jungho Daniel Choi, Nicol\'as Morales-Dur\'an, Yves H. Kwan, Andrew J. Millis, Nicolas Regnault, Daniele Guerci
https://arxiv.org/abs/2507.17819

Higher Chern bands in helical homotrilayer transition metal dichalcogenides
We propose helically twisted homotrilayer transition metal dichalcogenides as a platform for realizing correlated topological phases of matter with higher and tunable Chern numbers. We show that a clear separation of scales emerges for small twist angles, allowing us to derive a low-energy continuum model that captures the physics within moiré-scale domains. We identify regimes of twist angle and displacement field for which the highest-lying hole band is isolated from other bands and is topol…

Envelopes of lines, unfoldings and breaking symmetry
Peter Giblin, Alexander Wettig
https://arxiv.org/abs/2506.16547 https://arxiv.or…

Envelopes of lines, unfoldings and breaking symmetry
We generalise the well-known ``embroidery'' envelopes of chords joining points at angles $t$ and $mt$ of a single circle in several ways. Firstly we allow $m$ to be rational (possibly negative) instead of integral, finding formulas for the number of cusps, points at infinity and self-intersections of these envelopes. Secondly we use two concentric circles instead of one, taking the chords to join a point of one circle to a point of the other. This construction allows the formation of different …

Trump & China: TACO [gift link] https://www.nytimes.com/2025/07/20/us/politics/trump-china-technology.html?unlocked_article_code=1.X08.vV0m.heUT4E1iWQAj&smid=bs-share

As Trump Courts a More Assertive Beijing, China Hawks Are Losing Out
The Trump administration has dialed back aggressive measures against China and reversed its position on technology controls as the president angles for a Chinese trip later this year.

Floquet operator dynamics and orthogonal polynomials on the unit circle
Hsiu-Chung Yeh, Aditi Mitra
https://arxiv.org/abs/2506.20611 https://

Floquet operator dynamics and orthogonal polynomials on the unit circle
Operator spreading under stroboscopic time evolution due to a unitary is studied. An operator Krylov space is constructed and related to orthogonal polynomials on a unit circle (OPUC), as well as to the Krylov space of the edge operator of the Floquet transverse field Ising model with inhomogeneous couplings (ITFIM). The Verblunsky coefficients in the OPUC representation are related to the Krylov angles parameterizing the ITFIM. The relations between the OPUC and spectral functions are summariz…

My knee-jerk reaction to this article from @… was a cynical [citation needed] re “artists from all mediums emphatically support the use of AI.”
On further reflection…well, that’s still my response to the eyeball-grabbing lede, yes, but the actual article is what I wish we’d had instead of this inane hype avalanche:
Artists poking at the new thing, playing with it, finding its possibilities, critiquing it, problematizing it, asking us to ask what it is, helping us see it with fresh eyes from many angles. https://infosec.exchange/@adamshostack/114704865574139727

In-Plane Ni-O-Ni Bond Angles as Structural Fingerprints of Superconductivity in Layered Nickelates: Effects of Pressure, Strain, Layering, and Correlations
Bipasa Samanta, Alexandru B. Georgescu
https://arxiv.org/abs/2506.11427

In-Plane Ni-O-Ni Bond Angles as Structural Fingerprints of Superconductivity in Layered Nickelates: Effects of Pressure, Strain, Layering, and Correlations
We investigate the structural and electronic conditions conducive to superconductivity in layered nickelates using density functional theory with Hubbard corrections (DFT+$U$). For both the bilayer and 1-3 polymorphs of La$_3$Ni$_2$O$_7$, we find that the in-plane Ni-O-Ni bond angles under pressure strongly correlate with the experimentally observed superconducting transition temperature ($T_c$) dome, and may serve as a reasonable proxy. Under compressive strain, the bond angles straighten, pea…

The gravitational potential of spiral perturbations. I the 2D (razor-thin) case
Walter Dehnen
https://arxiv.org/abs/2507.16615 https://

The gravitational potential of spiral perturbations. I the 2D (razor-thin) case
I develop an efficient numerical method to obtain the gravitational potential of razor-thin spiral perturbations and use it to assess the standard tight-winding (or WKB) approximation, which is found reasonably accurate for pitch angles $α\lesssim 20°$. I extend Kalnajs' (1971)' potential-density pairs to logarithmic spirals with arbitrary power-law amplitude. Approximating a spiral locally by one of these models provides a second-order tight-winding approximation that predicts the phase offs…

This https://arxiv.org/abs/2307.06343 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Sequential Experimental Design for X-Ray CT Using Deep Reinforcement Learning
In X-ray Computed Tomography (CT), projections from many angles are acquired and used for 3D reconstruction. To make CT suitable for in-line quality control, reducing the number of angles while maintaining reconstruction quality is necessary. Sparse-angle tomography is a popular approach for obtaining 3D reconstructions from limited data. To optimize its performance, one can adapt scan angles sequentially to select the most informative angles for each scanned object. Mathematically, this corres…

Tilings of the sphere by congruent pentagons V: Edge combination $a^{4}b$ with rational angles
Jinjin Liang, Yixi Liao, Wenchuan Hu, Erxiao Wang
https://arxiv.org/abs/2507.07038

Tilings of the sphere by congruent pentagons V: Edge combination $a^{4}b$ with rational angles
We classify edge-to-edge tilings of the sphere by congruent pentagons with the edge combination $a^4b$ and with rational angles in degree: they are a one-parameter family of symmetric $a^4b$-pentagonal subdivisions of the tetrahedron with $12$ tiles; a sequence of unique symmetric $a^4b$-pentagons admitting a symmetric $3$-layer earth map tiling by $4m$ tiles for any $m\ge4$, among which each odd $m$ case admits two standard flip modifications; and a unique non-symmetric and degenerate $a^4b$-p…

JFC, he’s so fcking pathetic. Why doesn’t he just make up a NEW! BIGGER! MOST BEAUTIFUL! MOST AMAZING! peace prize ever and award it to himself, ffs?
https://www.politico.eu/article/donald-trump-called-norway-finance-minister-ask-abou…

Trump cold-called Norwegian minister to ask about Nobel Peace Prize
American president angles for top diplomatic award while world watches his summit with Russian leader Vladimir Putin.

What's the best way to average a bunch of angles to give a meaningful result around the wrap (i.e. -179 and 179 degrees should average to 180 degrees, not zero)?
My initial thought is to convert the angle to 2D I/Q coordinates on the complex plane, then do a vector average of the points, then atan2 to get back an angle.
Is there a better option that doesn't do trig for every sample?

Parsec-scale jet precession and a putative supermassive binary black hole system in the blazar AO 0235 164
Flavio Benevenuto da Silva Junior, Anderson Caproni
https://arxiv.org/abs/2508.14178

Parsec-scale jet precession and a putative supermassive binary black hole system in the blazar AO 0235+164
The blazar AO 0235+164 is a key source for studying the interplay between multi-wavelength variability in its light curves and changes in the position angles and apparent velocities of its parsec-scale jet components. In this work, we analyse public interferometric radio maps of AO 0235+164 at 15 and 43 GHz, using the Cross Entropy global optimisation technique to determine the structural parameters of its jet components. We identified 36 kinematically distinct jet components across all sky qua…

Bigpaw aka Toadlilly in the Kitchen for the Caturday Special Edition
#photo #photography #cats #catsofmastodon

On the sum of the angles between three vectors
Iosif Pinelis
https://arxiv.org/abs/2508.04759 https://arxiv.org/pdf/2508.04759

On the sum of the angles between three vectors
For any three nonzero vectors $a,b,c$ in $\mathbb R^2$, we obtain a necessary and sufficient condition for the sum of the three pairwise angles between these vectors to equal $2π$. As an easy consequence of this, a proof of Euclid's theorem that the sum of the interior angles of any triangle is $π$ is provided. So, the main result of this note can be considered a generalization of Euclid's theorem. To a large extent, the consideration is reduced almost immediately to a choice for the sum of t…

A dedicated search for upward-going air showers at zenith angles exceeding 110° and energies 𝐸>0.1  EeV motivated by two “anomalous” radio pulses observed by the ANITA flights I and III that appear inconsistent with the standard model of particle physics.
Somebody call #Monsterdon
https://share.google/XKjyY8H5wyFFgnKBA

A Novel Branch-and-Prune Algorithmic Framework for the 3D Interval Discretizable Distance Geometry Problem: An Approach Based on Torsion Angles of Molecular Structures
Wagner A. A. da Rocha, Carlile Lavor, Leo Liberti, Leticia de Melo Costa, Leonardo D. Secchin, Therese E. Malliavin
https://arxiv.org/abs/2508.09143

A Novel Branch-and-Prune Algorithmic Framework for the 3D Interval Discretizable Distance Geometry Problem: An Approach Based on Torsion Angles of Molecular Structures
Distance Geometry plays a central role in determining protein structures from Nuclear Magnetic Resonance (NMR) data, a task known as the Molecular Distance Geometry Problem (MDGP). A subclass of this problem, the Discretizable Distance Geometry Problem (DDGP), allows a recursive solution via the combinatorial Branch-and-Prune (BP) algorithm by exploiting specific vertex orderings in protein backbones. To accommodate the inherent uncertainty in NMR data, the interval Branch-and-Prune (\textit{i}…

Triangulating quantum gravity in AdS$_3$
Thomas Hartman
https://arxiv.org/abs/2507.12696 https://arxiv.org/pdf/2507.12696

Triangulating quantum gravity in AdS$_3$
The path integral of pure 3D gravity with negative cosmological constant is formulated on a finite region of spacetime $M$, with boundary conditions that fix geodesic lengths or dihedral angles on $\partial M$. In the dual CFT, this quasi-local amplitude calculates corrections to the Gaussian ensemble of OPE coefficients for black hole states. By triangulating $M$ with generalized tetrahedra, we develop a general method to construct semiclassical geometries and to calculate the exact gravitatio…

Tomato Multi-Angle Multi-Pose Dataset for Fine-Grained Phenotyping
Yujie Zhang, Sabine Struckmeyer, Andreas Kolb, Sven Reichardt
https://arxiv.org/abs/2507.11279

Tomato Multi-Angle Multi-Pose Dataset for Fine-Grained Phenotyping
Observer bias and inconsistencies in traditional plant phenotyping methods limit the accuracy and reproducibility of fine-grained plant analysis. To overcome these challenges, we developed TomatoMAP, a comprehensive dataset for Solanum lycopersicum using an Internet of Things (IoT) based imaging system with standardized data acquisition protocols. Our dataset contains 64,464 RGB images that capture 12 different plant poses from four camera elevation angles. Each image includes manually annotate…

Measurement of the photosphere oblateness of $\gamma$ Cassiopeiae via Stellar Intensity Interferometry with the VERITAS Observatory
A. Archer, J. P. Aufdenberg, P. Bangale, J. T. Bartkoske, W. Benbow, J. H. Buckley, Y. Chen, N. B. Y. Chin, J. L. Christiansen, A. J. Chromey, A. Duerr, M. Escobar Godoy, S. Feldman, Q. Feng, S. Filbert, L. Fortson, A. Furniss, W. Hanlon, O. Hervet, C. E. Hinrichs, J. Holder, Z. Hughes, T. B. Humensky, W. Jin, M. N. Johnson, M. Kertzman, M. Kherlakian, D. …

Measurement of the photosphere oblateness of $γ$ Cassiopeiae via Stellar Intensity Interferometry with the VERITAS Observatory
We use the stellar intensity interferometry system implemented with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) at Fred Lawrence Whipple Observatory (FLWO) as a light collector to obtain measurements of the rapid rotator star $γ$ Cassiopeiae, at a wavelength of 416 nm. Using data from baselines sampling different position angles, we extract the size, oblateness, and projected orientation of the photosphere. Fitting the data with a uniform ellipse model yields a minor-…

Energy-Based Models for Predicting Mutational Effects on Proteins
Patrick Soga, Zhenyu Lei, Yinhan He, Camille Bilodeau, Jundong Li
https://arxiv.org/abs/2508.10629 https://

Energy-Based Models for Predicting Mutational Effects on Proteins
Predicting changes in binding free energy ($ΔΔG$) is a vital task in protein engineering and protein-protein interaction (PPI) engineering for drug discovery. Previous works have observed a high correlation between $ΔΔG$ and entropy, using probabilities of biologically important objects such as side chain angles and residue identities to estimate $ΔΔG$. However, estimating the full conformational distribution of a protein complex is generally considered intractable. In this work, we propo…

Rolling at right angles: magnetic anisotropy enables dual-anisotropic active matter
Eavan Fitzgerald, C\'ecile Clavaud, Debasish Das, Isaac C. D. Lenton, Scott R. Waitukaitis
https://arxiv.org/abs/2508.05643

Rolling at right angles: magnetic anisotropy enables dual-anisotropic active matter
We report on an experimental active matter system with motion restricted to four cardinal directions. Our particles are magnetite-doped colloidal spheres driven by the Quincke electrorotational instability. The absence of a magnetic field $(|\mathbf{B}|=0)$ leads to circular trajectories interspersed with short spontaneous runs. Intermediate fields $(|\mathbf{B}|\lesssim 20~\text{mT})$ linearize the motion orthogonal to the field -- the axial mode. At high magnetic fields, w…

John Fothergill’s description of a headache he suffered in the winter of 1778 is thought to be the first anglophone account of a #migraine’s ocular disturbances.
He saw “a singular kind of glimmering in the sight; objects change their apparent position surrounded by luminous angles, like those of a fortification.
Giddiness comes on, headache, and sickness”.
Fothergill was detailing, wi…

Visualizing Migraines: The Attempts of Hubert Airy and Others to Depict Scintillating Scotomata
In a 1870 paper, Hubert Airy became the first to attempt to explicitly visualise the scintillating scotomata of his migraine.

Convergence analysis of Left-Right splitting surface scattering method
Paul E Parbone, Mark Spivack, Orsola Rath Spivack
https://arxiv.org/abs/2508.12342 https://

Convergence analysis of Left-Right splitting surface scattering method
We study the convergence of the Left-Right splitting method (equivalent in key respects to the Method of Multiple Ordered Interactions and Forward-Backward method) for wave scattering by rough surfaces. This is an operator series method primarily designed for low grazing incidence and found in many cases to converge rapidly, often within one or two terms even for large incident angles. However, convergence is not guaranteed and semi-convergence may be observed. Our aims are two-fold: (1) To o…

Ferroelectric switching control of spin current in graphene proximitized by In$_2$Se$_3$
Marko Milivojevi\'c, Juraj Mnich, Paulina Jureczko, Marcin Kurpas, Martin Gmitra
https://arxiv.org/abs/2506.15269

Ferroelectric switching control of spin current in graphene proximitized by In$_2$Se$_3$
By utilizing the proximity effect, we introduce a platform that exploits ferroelectric switching to modulate spin currents in graphene proximitized by ferroelectric In$_2$Se$_3$ monolayer. Through first-principles calculations and tight-binding modeling, we studied the electronic structure of graphene/In$_2$Se$_3$ heterostructure for twist angles of 0$^{\circ}$ and 17.5$^{\circ}$, considering both ferroelectric polarizations. We discover that switching the ferroelectric polarization reverses th…

Optical appearance of Schwarzschild black holes with optically thin and thick accretion disks at various inclination angles
Jiawei Chen, Jinsong Yang
https://arxiv.org/abs/2506.22891

Optical appearance of Schwarzschild black holes with optically thin and thick accretion disks at various inclination angles
In this paper, we systematically investigate the optical appearance of a Schwarzschild black hole illuminated by three geometrically thin accretion disk models under varying observational inclination angles. Based on the geometric relationship between the black hole and observer, we first divide the accretion disk into co-side and counter-side semi-disks. Subsequently, we analyze their differences in photon orbit distributions, transfer functions, and received intensities. Our results reveal di…

Projective rigidity of circle patterns and polyhedral surfaces in hyperbolic ends
Jean-Marc Schlenker
https://arxiv.org/abs/2508.15339 https://arxiv.org/pd…

Projective rigidity of circle patterns and polyhedral surfaces in hyperbolic ends
Let $S$ be a closed, orientable surface of genus $g\geq 2$. We consider Delaunay circle patterns on $S$ equipped with a complex projective structure. We prove that the space of complex projective structures on $S$ equipped with a Delaunay circle pattern of prescribed combinatorics and intersection angles is a manifold of dimension $6g-6$, and that the forgetful map to the space $\cC_S$ of $\CP^1$-structures on $S$ is a Lagrangian immersion. This extends a recent result of Bonsante and Wolf for …

Propagation Channel Modeling for LEO Satellite Missions Using Ray-Tracing Simulations
Wahab Khawaja, Ismail Guvenc, Rune Hylsberg Jacobsen
https://arxiv.org/abs/2507.14622

Propagation Channel Modeling for LEO Satellite Missions Using Ray-Tracing Simulations
This work presents a high-resolution, ray-tracing-based channel modeling for Low Earth Orbit (LEO) satellite-to-ground links in a suburban environment at X-band. Using simulations conducted in Wireless InSite, we develop a parametric channel model that characterizes both large- and small-scale fading effects across different satellite elevation angles. Large-scale fading incorporates attenuation due to terrain-induced shadowing and dynamic environmental factors such as weather conditions, and i…

Decremental Greedy Polygons and Polyhedra Without Sharp Angles
David Eppstein
https://arxiv.org/abs/2507.04538 https://arxiv.org/pdf/…

Decremental Greedy Polygons and Polyhedra Without Sharp Angles
We show that the max-min-angle polygon in a planar point set can be found in time $O(n\log n)$ and a max-min-solid-angle convex polyhedron in a three-dimensional point set can be found in time $O(n^2)$. We also study the maxmin-angle polygonal curve in 3d, which we show to be $\mathsf{NP}$-hard to find if repetitions are forbidden but can be found in near-cubic time if repeated vertices or line segments are allowed, by reducing the problem to finding a bottleneck cycle in a graph. We formalize …

Anomalies in G and 2D Raman Modes of Twisted Bilayer Graphene Near the Magic Angle
Darshit Solanki, Kenji Watanabe, Takashi Taniguchi, A. K. Sood, Anindya Das
https://arxiv.org/abs/2506.18166

Anomalies in G and 2D Raman Modes of Twisted Bilayer Graphene Near the Magic Angle
The role of twist angle ($θ_t$) in tailoring the physical properties of heterostructures is emerging as a new paradigm in two-dimensional materials. The influence of flat electronic bands near the magic angle ($\sim$1.1$^{\circ}$) on the phononic properties of twisted bilayer graphene (t-BLG) is not well understood. In this work, we systematically investigate the G and 2D Raman modes of t-BLG samples with twist angles ranging from $\sim$0.3$^{\circ}$ to $\sim$3$^{\circ}$ using micro-Raman spec…

Bayesian Inference of Nuclear-Matter Density from Proton Scattering
J. C. Zamora
https://arxiv.org/abs/2507.14402 https://arxiv.org/p…

Bayesian Inference of Nuclear-Matter Density from Proton Scattering
Background: Proton elastic scattering at intermediate energy is widely employed as a tool for determining the matter radius of atomic nuclei. The sensitivity of the approach relies on high-resolution measurements at small scattering angles and low-momentum transfer. Under these conditions, the Glauber multiple scattering theory accurately describes the proton-nucleus elastic cross section. Purpose: Investigate the sensitivity of the Glauber multiple scattering theory to uncertainties associat…

🇺🇦 #NowPlaying on KEXP's #VarietyMix
Blue Ringed Baby & Kamī:
🎵 Salt Eyes (Placid Angles Remix)
#BlueRingedBaby #Kamī
#newRelease 🆕 single
https://goddezz.bandcamp.com/album/salt-eyes-placid-angles-remix
https://open.spotify.com/track/4wlAqGZPM7Jxm0fvSymyPf

On the isomorphism problem for generalized Baumslag-Solitar groups: angles
Dario Ascari, Montserrat Casals-Ruiz, Ilya Kazachkov
https://arxiv.org/abs/2508.03231 https://

On the isomorphism problem for generalized Baumslag-Solitar groups: angles
We introduce a new isomorphism invariant for generalized Baumslag-Solitar (GBS) groups, which we call the limit angle. Unlike previously known invariants, which are primarily algebraic, the limit angle admits a dynamical interpretation, arising exclusively in the case of two interacting edges. This invariant captures subtle geometric behavior that does not manifest in configurations with more interacting edges. As an application, we use the limit angle to obtain a classification of GBS groups w…

All-Angle Scanning Leaky-Wave Antennas and Surface-Wave Routing by Reconfigurable Metasurfaces
Yongming Li, Xikui Ma, Viktar Asadchy, Sergei A. Tretyakov
https://arxiv.org/abs/2506.14954

All-Angle Scanning Leaky-Wave Antennas and Surface-Wave Routing by Reconfigurable Metasurfaces
In this work, we show that propagating waves can be fully converted into surface waves and back using geometrically periodic arrays of simple electrically small metal elements loaded by adjustable reactive loads. The proposed approach allows the creation of all-angle scanning leaky-wave antennas with perfect or even superdirective aperture efficiency at all scan angles. Moreover, it is possible to co-design such leaky-wave antenna arrays with surface-wave waveguides that can guide the received …

The Superclouds of the Local Milky Way
Lilly A. Kormann, Jo\~ao Alves, Juan D. Soler, Michelangelo Pantaleoni Gonz\'alez, Cameren Swiggum, Torsten A. En{\ss}lin, Gordian Edenhofer
https://arxiv.org/abs/2507.14883

The Superclouds of the Local Milky Way
Recent 3D dust maps of the local Milky Way are revolutionizing our understanding of the Sun's Galactic neighborhood, bringing much-needed insight into the large-scale organization of the interstellar medium. Focusing on the largest scales in $\textit{Gaia}$-based 3D dust maps, we find a pattern of seven highly elongated, mostly parallel structures in the local $5\,\mathrm{kpc}^2$, five of which were previously unknown. These structures show pitch angles of $33.5 \pm 4.0 ^\circ$, and masses rang…

I didn't take A-level chemistry back when I was a teenager, so playing catch-up... the equilibrium bond angles in sp² and sp³ hybridized bonds make shapes that tesselate nicely (regular hexagonal prisms and regular tetrahedra respectively) to form crystalline solids. But that didn't have to be the case, did it? Is that one of the anthropic coincidences cosmologists get exercised about? #Chemistry

🇺🇦 Auf radioeins läuft...
DJ Tennis feat. Fink:
🎵 Certain Angles
#NowPlaying #DJTennis #Fink
https://tennisdj.bandcamp.com/album/certain-angles
https://open.spotify.com/track/7ohuxQB16cbadniXIiUOmQ

Quantum Relational Knowledge Distillation
Chen-Yu Liu, Kuan-Cheng Chen, Keisuke Murota, Samuel Yen-Chi Chen, Enrico Rinaldi
https://arxiv.org/abs/2508.13054 https://

Quantum Relational Knowledge Distillation
Knowledge distillation (KD) is a widely adopted technique for compressing large models into smaller, more efficient student models that can be deployed on devices with limited computational resources. Among various KD methods, Relational Knowledge Distillation (RKD) improves student performance by aligning relational structures in the feature space, such as pairwise distances and angles. In this work, we propose Quantum Relational Knowledge Distillation (QRKD), which extends RKD by incorporatin…

Angle Estimation of a Single Source with Massive Uniform Circular Arrays
Mingyan Gong
https://arxiv.org/abs/2507.13086 https://arxiv.…

Angle Estimation of a Single Source with Massive Uniform Circular Arrays
Estimating the directions of arrival (DOAs) of incoming plane waves is an essential topic in array signal processing. Widely adopted uniform linear arrays can only provide estimates of source azimuth. Thus, uniform circular arrays (UCAs) are attractive in that they can provide $360^{\circ}$ azimuthal coverage and additional elevation angle information. Considering that with a massive UCA, its polar angles of array sensors can approximately represent azimuth angles over $360^{\circ}$ using angle…

A Thermodynamically Consistent Free Boundary Model for Two-Phase Flows in an Evolving Domain with Moving Contact Lines, Variable Contact Angles and Bulk-Surface Interaction
Patrik Knopf, Yadong Liu
https://arxiv.org/abs/2507.01618

A Thermodynamically Consistent Free Boundary Model for Two-Phase Flows in an Evolving Domain with Moving Contact Lines, Variable Contact Angles and Bulk-Surface Interaction
We derive a thermodynamically consistent model, which describes the time evolution of a two-phase flow in an evolving domain. The movement of the free boundary of the domain is driven by the velocity field of the mixture in the bulk, which is determined by a Navier--Stokes equation. In order to take interactions between bulk and boundary into account, we further consider two materials on the boundary, which may be the same or different materials as those in the bulk. The bulk and the surface ma…

"During his time at IBM, he wrote some of the first artificial intelligence software—his "geometry theorem machine" was the first advanced AI program, and the third AI program ever. It is a logical AI system that can prove theorems in planar geometry about parallel lines, congruence, and equality and inequality of segments and angles. Like Logic Theorist, it uses heuristics."

Factorization and Resummation for the Nearside Energy-Energy Correlators
Yuxun Guo, Feng Yuan, Wenbin Zhao
https://arxiv.org/abs/2507.15820 https://…

Factorization and Resummation for the Nearside Energy-Energy Correlators
By utilizing the di-hadron fragmentation formalism, we extend the previous factorization of nearside energy-energy correlators (EEC) in the collinear limit and derive an all order resummation in the Fourier transform $b_T$-space. A perfect matching is obtained when we compare to the fixed-order results. We further demonstrate the resummation effects for the EEC in $e^+e^-$ annihilation and show that they will significantly improve the theoretical predictions at small angles.

X-ray spectropolarimetric characterization of the Z-source GX 340 0 in the normal branch
Fabio La Monaca, Alessandro Di Marco, Francesco Coti Zelati, Anna Bobrikova, Renee M. Ludlam, Juri Poutanen, Alessio Marino, Songwei Li, Fei Xie, Hua Feng, Chichuan Jin, Nanda Rea, Lian Tao, Weimin Yuan
https://arxiv.org/abs/2508.13278

X-ray spectropolarimetric characterization of the Z-source GX 340+0 in the normal branch
This study presents an X-ray spectropolarimetric characterisation of the Z-source GX 340+0 during the normal branch (NB) and compares it with that obtained for the horizontal branch (HB), using IXPE, NICER and NuSTAR observations. The analysis reveals significant polarisation, with polarisation degrees (PD) of ${\sim}1.4$\% in the NB and ${\sim}3.7$\% in the HB, indicating a notable decrease in polarisation when transitioning from the HB to the NB. The polarisation angles show a consistent tren…

On ADEG-polyhedra in hyperbolic spaces
Naomi Bredon
https://arxiv.org/abs/2507.05153 https://arxiv.org/pdf/2507.05153

On ADEG-polyhedra in hyperbolic spaces
In this paper, we establish that the non-zero dihedral angles of hyperbolic Coxeter polyhedra of large dimensions are not arbitrarily small. Namely, for dimensions $n\geq 32$, they are of the form $\fracπ{m}$ with $m\leq 6$. Moreover, this property holds in all dimensions $n\geq 7$ for Coxeter polyhedra with mutually intersecting facets. Then, we develop a constructive procedure tailored to Coxeter polyhedra with prescribed dihedral angles, from which we derive the complete classification of A…

"Mapping What I Feel": Understanding Affective Geovisualization Design Through the Lens of People-Place Relationships
Xingyu Lan, Yutong Yang, Yifan Wang
https://arxiv.org/abs/2507.11841

"Mapping What I Feel": Understanding Affective Geovisualization Design Through the Lens of People-Place Relationships
Affective visualization design is an emerging research direction focused on communicating and influencing emotion through visualization. However, as revealed by previous research, this area is highly interdisciplinary and involves theories and practices from diverse fields and disciplines, thus awaiting analysis from more fine-grained angles. To address this need, this work focuses on a pioneering and relatively mature sub-area, affective geovisualization design, to further the research in this…

Object-Centric Mobile Manipulation through SAM2-Guided Perception and Imitation Learning
Wang Zhicheng, Satoshi Yagi, Satoshi Yamamori, Jun Morimoto
https://arxiv.org/abs/2507.10899

Object-Centric Mobile Manipulation through SAM2-Guided Perception and Imitation Learning
Imitation learning for mobile manipulation is a key challenge in the field of robotic manipulation. However, current mobile manipulation frameworks typically decouple navigation and manipulation, executing manipulation only after reaching a certain location. This can lead to performance degradation when navigation is imprecise, especially due to misalignment in approach angles. To enable a mobile manipulator to perform the same task from diverse orientations, an essential capability for buildin…

Edit360: 2D Image Edits to 3D Assets from Any Angle
Junchao Huang, Xinting Hu, Zhuotao Tian, Shaoshuai Shi, Li Jiang
https://arxiv.org/abs/2506.10507 https…

Edit360: 2D Image Edits to 3D Assets from Any Angle
Recent advances in diffusion models have significantly improved image generation and editing, but extending these capabilities to 3D assets remains challenging, especially for fine-grained edits that require multi-view consistency. Existing methods typically restrict editing to predetermined viewing angles, severely limiting their flexibility and practical applications. We introduce Edit360, a tuning-free framework that extends 2D modifications to multi-view consistent 3D editing. Built upon vi…

Hoping for a #flare: During the final days of our 2 week observation campaign with #GREGORSolarTelescope on Tenerife, scientists work remote from the “GREGOR Operations Center” at #MPSGoettingen

Spatially Resolved [O III] Emission Line Kinematics of Reverberation-Mapped AGNs with the Keck Cosmic Web Imager
Raymond P. Remigio, Vivian U, Aaron J. Barth, Nico Winkel, Vardha N. Bennert, Tommaso Treu, Matthew A. Malkan, Sebastian Contreras, Peter R. Williams, Jordan N. Runco, Liam Hunt
https://arxiv.org/abs/2508.14304

Spatially Resolved [O III] Emission Line Kinematics of Reverberation-Mapped AGNs with the Keck Cosmic Web Imager
We present optical integral-field spectroscopic data of ten nearby ($0.02\leq z \leq 0.05$) Seyfert 1 galaxies taken with the Keck Cosmic Web Imager (KCWI). We map the spatially resolved kinematics of the [O III] gas and stars, and investigate the alignments between their global kinematic position angles (PA). Large-scale gas motions are primarily dominated by rotation, and are kinematically aligned with the stars ($Δ\text{PA}\leq 30$ deg). However, eight galaxies exhibit non-rotational kinema…

Static Contact Angles of Mixtures: Classical Density Functional Theory and Experimental Investigation
Benjamin Bursik, Nikolaos Karadimitriou, Holger Steeb, Joachim Gross
https://arxiv.org/abs/2506.21007

Static Contact Angles of Mixtures: Classical Density Functional Theory and Experimental Investigation
This work assesses a classical density functional theory (DFT) model for predicting macroscopic static contact angles of pure substances and mixtures by comparison to own experimental data. We employ a DFT with a Helmholtz energy functional based on the perturbed-chain statistical associating fluid theory (PC-SAFT) for the fluid-fluid interactions and an effective external potential for the solid-fluid interactions. The solid substrate is characterized by adjusting a single solid-solid interact…

PathDB: A system for evaluating regular path queries
Roberto Garc\'ia, Renzo Angles, Vicente Rojas, Sebasti\'an Ferrada
https://arxiv.org/abs/2507.01755

PathDB: A system for evaluating regular path queries
PathDB is a Java-based graph database designed for in-memory data loading and querying. By utilizing Regular Path Queries (RPQ) and a closed path algebra, PathDB processes paths through its three main components: the parser, the logical plan, and the physical plan. This modular design allows for targeted optimizations and modifications without impacting overall functionality. Benchmark experiments illustrate PathDB's execution times and flexibility in handling dynamic and complex path queries, …

Tight Routing and Spanning Ratios of Arbitrary Triangle Delaunay Graphs
Prosenjit Bose, Jean-Lou De Carufel, John Stuart
https://arxiv.org/abs/2506.12625 h…

Tight Routing and Spanning Ratios of Arbitrary Triangle Delaunay Graphs
A Delaunay graph built on a planar point set has an edge between two vertices when there exists a disk with the two vertices on its boundary and no vertices in its interior. When the disk is replaced with an equilateral triangle, the resulting graph is known as a Triangle-Distance Delaunay Graph or TD-Delaunay for short. A generalized $\text{TD}_{θ_1,θ_2}$-Delaunay graph is a TD-Delaunay graph whose empty region is a scaled translate of a triangle with angles of $θ_1,θ_2,θ_3:=π-θ_1-θ_2$…

Relations between parameters of the Hamiltonian and Neel-type states in the anisotropic Heisenberg model
Pavel Babaian, Gennady Koval
https://arxiv.org/abs/2507.12225

Relations between parameters of the Hamiltonian and Neel-type states in the anisotropic Heisenberg model
This article investigates Neel-type states in the anisotropic Heisenberg model with an external field. For arbitrary spin $s$ and arbitrary dimension of the space $d$ we find the expressions relating the angles which define the directions of spin polarisation to the parameters of the Hamiltonian.

Gravitational Scattering of Two Neutron Stars
Joan Fontbut\'e, Sebastiano Bernuzzi, Piero Rettegno, Simone Albanesi, Wolfgang Tichy
https://arxiv.org/abs/2506.11204

Gravitational Scattering of Two Neutron Stars
We present the first numerical relativity simulations of the gravitational scattering of two neutron stars. Constraint-satisfying initial data for two equal-mass non-spinning sequences are constructed at fixed energy and various initial angular momenta (impact parameter) and evolved with Einstein equations through the scattering process. The strong-field scattering dynamics are explored up to scattering angles of $225^\circ$ and the threshold of dynamical captures. The transition to bound orbit…

Frequency comb in twisted magnonic crystals
Minghao Li, Zhejunyu Jin, Zhaozhuo Zeng, Peng Yan
https://arxiv.org/abs/2507.10922 https://

Frequency comb in twisted magnonic crystals
While twisted magnonic crystals (MCs) have recently gained attention for their intriguing linear phenomena, such as magnon flat bands, their nonlinear dynamics -- particularly the generation of magnonic frequency combs (MFCs) -- have remained largely unexplored. In this work, we demonstrate the creation of MFCs in twisted MCs using two-tone microwave excitation. We find that finite twist angles significantly enhance three-magnon interactions, driven by the non-collinear ground-state magnetic co…

Camera Angles
Season 7 Episode 10 "Search and Rescue"
#RandomBaywatch #lvdlpx #Baywatch

A novel approach to determining the age of stellar clusters: application to NGC 188
K. Yakut, B. Kalomeni, S. Rappaport
https://arxiv.org/abs/2508.09255 https://

A novel approach to determining the age of stellar clusters: application to NGC 188
We present a new independent determination for the age of one of the oldest open clusters, NGC 188: $6.41 \pm 0.33$ Gyr. We utilize a novel approach where we jointly fit the radial velocities (RVs) and spectral energy distributions (SED) of six binary star systems in the cluster. The joint fit has 21 free parameters: 12 stellar masses, 6 orbital inclination angles, as well as a common cluster age, distance, and extinction, $A_V$. The fit to the SEDs utilizes MIST stellar isochrones, and the fit…

Multi-angle precession electron diffraction (MAPED): a versatile approach to 4D-STEM precession
Stephanie M. Ribet, Rohan Dhall, Colin Ophus, Karen C. Bustillo
https://arxiv.org/abs/2506.11327

Multi-angle precession electron diffraction (MAPED): a versatile approach to 4D-STEM precession
Precession of a converged beam during acquisition of a 4D-STEM dataset improves strain, orientation, and phase mapping accuracy by averaging over continuous angles of illumination. Precession experiments usually rely on integrated systems, where automatic alignments lead to fast, high-quality results. The dependence of these experiments on specific hardware and software is evident even when switching to non-integrated detectors on a precession tool, as experimental set-up becomes challenging an…

Moir\'e dependent Chern insulators in twisted crystalline flatbands
Wenxuan Wang, Yijie Wang, Zaizhe Zhang, Zihao Huo, Gengdong Zhou, Kenji Watanabe, Takashi Taniguchi, X. C. Xie, Kaihui Liu, Zhida Song, Xiaobo Lu
https://arxiv.org/abs/2507.10875

Moiré dependent Chern insulators in twisted crystalline flatbands
In moiré crystals, the competition between different isospin configurations can be tuned by twist angles and stacking orders, forming various symmetry-broken states. Here we report twisted double rhombohedral-trilayer-gaphene as a new twisted crystalline flatbands system showing rich moiré dependent topological phenomena. For small twist angles, programmable Chern insulators with Chern number C = 3 at integer moiré filling v = 1 have been observed. We have further revealed multiple first-ord…

Probing the sensitivity of CTAO-N LSTs observations at large zenith angles to the multi-TeV gamma-ray emission from the inner 10 parsecs of the Galactic Center
Shotaro Abe, Tomohiro Inada, Emmanuel Moulin
https://arxiv.org/abs/2506.04074

Probing the sensitivity of CTAO-N LSTs observations at large zenith angles to the multi-TeV gamma-ray emission from the inner 10 parsecs of the Galactic Center
Observations of the Galactic Center using Imaging Atmospheric Cherenkov Telescopes (IACTs), such as H.E.S.S., MAGIC, and VERITAS, have revealed a very-high-energy (VHE, $\gtrsim 100$ GeV) gamma-ray source, HESS J1745$-$290, aligned with the dynamical center of the Milky Way. This source shows point-like emission ($\lesssim 0.1^\circ$) and a strong suppression in its energy-differential spectrum in the ten TeV energy regime, modeled well by a power-law with an exponential cutoff. The origin of t…

On face angles of tetrahedra with a given base
E. V. Nikitenko, Yu. G. Nikonorov
https://arxiv.org/abs/2505.22374 https://arxiv.org/p…

On face angles of tetrahedra with a given base
Let us consider the set $Ω(\triangle ABC)$ of all tetrahedra $ABCD$ with a given non-degenerate base $ABC$ in $\mathbb{E}^3$ and $D$ lying outside the plane $ABC$. Let us denote by $Σ(\triangle ABC)$ the set $\left\{\Bigl(\cos \overlineα,\cos \overlineβ,\cos \overlineγ \Bigr)\in \mathbb{R}^3\,|\, ABCD \in Ω(\triangle ABC)\right\}$, where $\overlineα=\angle BDC$, $\overlineβ=\angle ADC$, and $\overlineγ=\angle ADB$. The paper is devoted to the problem of determining of the closure …

SV-DRR: High-Fidelity Novel View X-Ray Synthesis Using Diffusion Model
Chun Xie, Yuichi Yoshii, Itaru Kitahara
https://arxiv.org/abs/2507.05148 https://

SV-DRR: High-Fidelity Novel View X-Ray Synthesis Using Diffusion Model
X-ray imaging is a rapid and cost-effective tool for visualizing internal human anatomy. While multi-view X-ray imaging provides complementary information that enhances diagnosis, intervention, and education, acquiring images from multiple angles increases radiation exposure and complicates clinical workflows. To address these challenges, we propose a novel view-conditioned diffusion model for synthesizing multi-view X-ray images from a single view. Unlike prior methods, which are limited in an…

This https://arxiv.org/abs/2410.03483 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

A Versatile Neural Network Configuration Space Planning and Control Strategy for Modular Soft Robot Arms
Modular soft robot arms (MSRAs) are composed of multiple modules connected in a sequence, and they can bend at different angles in various directions. This capability allows MSRAs to perform more intricate tasks than single-module robots. However, the modular structure also induces challenges in accurate planning and control. Nonlinearity and hysteresis complicate the physical model, while the modular structure and increased DOFs further lead to cumulative errors along the sequence. To address …

This https://arxiv.org/abs/2505.19412 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

2d Cardy-Rabinovici model with the modified Villain lattice: Exact dualities and symmetries
The Cardy-Rabinovici model is a toy model of the lattice $U(1)$ gauge theories to study various oblique confinement states associated with the nonzero $θ$ angles. We reformulate the $2$d version of this model using the modified Villain lattice formalism, and we establish the exact $θ$ periodicity for the Witten effect and the strong-weak duality at the finite lattice spacings. We then study the phase structure of this model based on the duality, symmetry and anomaly, and the perturbative reno…

Study on deflection angle, shadow, quasinormal modes, and greybody factor of the black hole surrounded by quintessence in Rastall gravity
Susmita Sarkar, Nayan Sarkar, Tuhina Manna, Moumita Sarkar, Farook Rahaman
https://arxiv.org/abs/2508.09221

Study on deflection angle, shadow, quasinormal modes, and greybody factor of the black hole surrounded by quintessence in Rastall gravity
The present study focuses on investigating the deflection angle in the weak-field approximation, shadow, quasinormal modes using Lyapunov exponents, and lower bound of the greybody factor for a charged black hole surrounded by a quintessence field in Rastall gravity. The weak deflection angles are calculated using the Gauss-Bonnet method. They decrease with increasing impact parameter b and charge Q, but gradually increase with increasing black hole mass m. Notably, the presence of a surroundin…

No Hiding in the Dark: Cosmological Bounds on Heavy Neutral Leptons with Dark Decay Channels
P. S. Bhupal Dev, Quan-feng Wu, Xun-Jie Xu
https://arxiv.org/abs/2507.12270

No Hiding in the Dark: Cosmological Bounds on Heavy Neutral Leptons with Dark Decay Channels
Heavy neutral leptons (HNLs) are well-motivated new physics candidates. The mixing of sub-GeV HNLs with active neutrinos is severely constrained by cosmology. In particular, the success of Big Bang Nucleosynthesis (BBN) requires the HNL lifetime to be shorter than about 0.02 sec if they were in thermal equilibrium, thus excluding a wide range of mixing angles accessible to terrestrial experiments. In order to justify the laboratory searches in this cosmologically-forbidden region, it is often a…

The fine structure of the mean magnetic field in M31
Indrajit Paul, R. Vasanth Kashyap, Tuhin Ghosh, Rainer Beck, Luke Chamandy, Srijita Sinha, Anvar Shukurov
https://arxiv.org/abs/2506.13954

The fine structure of the mean magnetic field in M31
To explore the spatial variations of the regular (mean) magnetic field of the Andromeda galaxy (M31), we use Fourier analysis in azimuthal angle along four rings in the galaxy's plane. Earlier analyses indicated that the axisymmetric magnetic field (azimuthal Fourier mode $m=0$) is sufficient to fit the observed polarization angles in a wide range of galactocentric distances. We apply a Bayesian inference approach to new, more sensitive radio continuum data at $λ\lambda3.59$, $6.18$, and $11.3…

Reducing quantum resources for observable estimation with window-assisted coherent QPE
Harriet Apel, Cristian L. Cortes, Jessica Lemieux, Mark Steudtner
https://arxiv.org/abs/2508.06677

Reducing quantum resources for observable estimation with window-assisted coherent QPE
Quantum Phase Estimation (QPE) routines are known to fail probabilistically even with perfect gates and input states. This effect stems from an incompatibility of finite-sized quantum registers to capture a phase within QPE with phase angles of infinite precision, and the effect extend even beyond what would be reasonably expected from rounding. This effect can be partially mitigated by biasing the phase register with a window, or taper state, from classical signal processing. This paper focuse…

Measurement of the cosmic-ray energy spectrum above 2.5 EeV using 19 years of operation of the Pierre Auger Observatory
Diego Ravignani (for the Pierre Auger Collaboration)
https://arxiv.org/abs/2507.08573

Measurement of the cosmic-ray energy spectrum above 2.5 EeV using 19 years of operation of the Pierre Auger Observatory
We present the spectrum of cosmic rays with energies above 2.5 EeV measured at the Pierre Auger Observatory after 19 years of operation, covering the period before the AugerPrime upgrade. Two independent event sets from the surface array of 1500 m-spaced detectors are combined, yielding a total exposure of approximately 100,000 km$^2$ sr yr. The first set includes events with zenith angles less than 60$^\circ$, while the second consists of events between 60$^\circ$ and 80$^\circ$, for which azi…

A Learning-based Planning and Control Framework for Inertia Drift Vehicles
Bei Zhou, Zhouheng Li, Lei Xie, Hongye Su, Johannes Betz
https://arxiv.org/abs/2507.05748

A Learning-based Planning and Control Framework for Inertia Drift Vehicles
Inertia drift is a transitional maneuver between two sustained drift stages in opposite directions, which provides valuable insights for navigating consecutive sharp corners for autonomous racing.However, this can be a challenging scenario for the drift controller to handle rapid transitions between opposing sideslip angles while maintaining accurate path tracking. Moreover, accurate drift control depends on a high-fidelity vehicle model to derive drift equilibrium points and predict vehicle st…

Replaced article(s) found for math.MG. https://arxiv.org/list/math.MG/new
[1/1]:
- On the sum of the angles between three vectors
Iosif Pinelis
https://

Spin-Dependent Axion Generation with Controllable Emission Angles in Strong Laser Fields
Jia-Ding Chen, Hang Liu, Kai-Hong Zhuang, Baifei Shen, Pei-Lun He, Yue-Yue Chen
https://arxiv.org/abs/2507.21596

Spin-Dependent Axion Generation with Controllable Emission Angles in Strong Laser Fields
We investigate axion production in the collision between a spin-polarized relativistic electron beam and an ultraintense laser pulse. A spin-resolved Monte Carlo framework is developed to model axion-electron and axion-photon couplings in arbitrary electromagnetic fields, using quantum emission probabilities under the local constant field approximation. Owing to spin-dependent asymmetries in radiation probability, the emitted axions acquire a characteristic angular deflection tied to the initia…

Replaced article(s) found for quant-ph. https://arxiv.org/list/quant-ph/new
[1/3]:
- Tight bounds of quantum speed limit for noisy dynamics via maximum rotation angles
Zihao Hu, Haidong Yuan, Zigui Zhang, Chi-Hang Fred Fung, Zibo Miao

Dynamics and multi-stability of a rotor-actuated Twistcar robot with passive steering joint
Anna Zigelman, Zitao Yu, Rom Levy, Yizhar Or
https://arxiv.org/abs/2507.04846

Dynamics and multi-stability of a rotor-actuated Twistcar robot with passive steering joint
The nonlinear dynamics of many under-actuated wheeled platforms are governed by nonholonomic constraints of no-skid for passively rolling wheels, coupled with momentum balance. In most of theoretical models, the shape variables, i.e. joint angles, are directly prescribed as periodic inputs, such as steering angle of the Twistcar. In this work, we study a variant of the Twistcar model where the actuation input is periodic oscillations of an inertial rotor attached to the main body, while the ste…

Diverse high-Chern-number quantum anomalous Hall insulators in twisted rhombohedral graphene
Naitian Liu, Zhangyuan Chen, Jing Ding, Wenqiang Zhou, Hanxiao Xiang, Xinjie Fang, Linfeng Wu, Xiaowan Zhan, Le Zhang, Qianmei Chen, Kenji Watanabe, Takashi Taniguchi, Na Xin, Shuigang Xu
https://arxiv.org/abs/2507.11347

Diverse high-Chern-number quantum anomalous Hall insulators in twisted rhombohedral graphene
Quantum anomalous Hall (QAH) insulators with high Chern number (C) enables multiple dissipationless edge channels for low-power-consumption electronics. We report the realization of multiple high-C QAH insulators including C=3,5,6, and 7 in twisted monolayer-rhombohedral pentalayer graphene. In twist angles of approximately 1.40°, we observe QAH effect with C=5 at a filling of one electron per moiré unit cell, persisting up to 2 Kelvin. Furthermore, incommensurate QAH insulators with C=5,6, a…

Optimization of Liquid Lens-based Imaging Receiver for MIMO VLC Systems
Kapila W. S. Palitharathna, Christodoulos Skouroumounis, Ioannis Krikidis
https://arxiv.org/abs/2508.05204

Optimization of Liquid Lens-based Imaging Receiver for MIMO VLC Systems
In this paper, a liquid lens-based imaging receiver is proposed for multiple-input multiple-output (MIMO) visible light communication (VLC) systems. By dynamically adjusting the focal length and orientation angles of the liquid lens, the spatial correlation between MIMO channel gains is reduced, leading to enhanced bit-error rate (BER) performance. Unlike static lenses, liquid lenses offer adaptability in dynamic conditions, including user mobility and random receiver orientation. An accurate m…

Second public data release of the FIRE-2 cosmological zoom-in simulations of galaxy formation
Andrew Wetzel, Jenna Samuel, Pratik J. Gandhi, Sam B. Ponnada, Kung-Yi Su, Arpit Arora, Daniel Angles-Alcazar, Christopher C. Hayward, Robyn E. Sanderson, Robert Feldmann, Rachel Cochrane, Farnik Nikakhtar, Nondh Panithanpaisal, Jose A. Benavides, Viraj Pandya, Mike Grudic, Cameron Hummels, Alexander B. Gurvich, Zachary Hafen, Xiangcheng Ma, Shea Garrison-Kimmel, Omid Sameie, T. K Chan, Kareem…

Second public data release of the FIRE-2 cosmological zoom-in simulations of galaxy formation
We describe the second data release (DR2) of the FIRE-2 cosmological zoom-in simulations of galaxy formation, from the Feedback In Realistic Environments (FIRE) project, available at http://flathub.flatironinstitute.org/fire. DR2 includes all snapshots for most simulations, starting at z ~ 99, with all snapshot time spacings <~ 25 Myr. The Core suite -- comprising 14 Milky Way-mass galaxies, 5 SMC/LMC-mass galaxies, and 4 lower-mass galaxies -- includes 601 snapshots to z = 0. For the Core suit…

This https://arxiv.org/abs/2411.17005 has been replaced.
initial toot: https://mastoxiv.page/@a…

Twist Angle Dependent Ultrafast Transient Dynamics of MoSe$_2$/WSe$_2$ van der Waals Heterostructures beyond the Exciton Mott Transition
Two-dimensional van der Waals heterostructures (HS) exhibit twist-angle ($θ$) dependent interlayer charge transfer, driven by moiré potential that tunes the electronic band structure with varying $θ$. Apart from the magic angles of $\sim$3$^\circ$ and $\sim$57.5$^\circ$ that show flat valence bands (twisted WSe$_2$ bilayer), the commensurate angles of 21.8$^\circ$ and 38.2$^\circ$ reveal the Umklapp light coupling of interlayer excitons. We report our results on non-degenerate optical pump-o…

Observation of Broadband In-ice Radiation from Impacting High-Energy Cosmic Rays
Philipp Windischhofer (for the ARA Collaboration), Nathaniel Alden (for the ARA Collaboration)
https://arxiv.org/abs/2507.06151

Observation of Broadband In-ice Radiation from Impacting High-Energy Cosmic Rays
We present the first experimental evidence for in-ice radiofrequency emission from high-energy particle cascades developing in the Antarctic ice sheet. In 208 days of data recorded with the phased-array trigger of the Askaryan Radio Array, we detect 13 events with impulsive radiofrequency pulses originating from below the ice surface. Considering only the arrival angles and timing properties, this rate is inconsistent with an a-posteriori background expectation for thermal noise events and on-s…

This https://arxiv.org/abs/2410.05740 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

Learning to Drift in Extreme Turning with Active Exploration and Gaussian Process Based MPC
Extreme cornering in racing often leads to large sideslip angles, presenting a significant challenge for vehicle control. Conventional vehicle controllers struggle to manage this scenario, necessitating the use of a drifting controller. However, the large sideslip angle in drift conditions introduces model mismatch, which in turn affects control precision. To address this issue, we propose a model correction drift controller that integrates Model Predictive Control (MPC) with Gaussian Process R…

Resonant leptogenesis in inverse see-saw framework with modular $S_4$ symmetry
Abhishek, V. Suryanarayana Mummidi
https://arxiv.org/abs/2507.06610 https://…

Resonant leptogenesis in inverse see-saw framework with modular $S_4$ symmetry
This work introduces a model for lepton mass generation and flavor mixing, realized through a (2,3) inverse seesaw structure within a modular \( S_4 \) symmetry framework. The model employs modular forms to construct the lepton Yukawa couplings, thereby significantly simplifying the model by reducing its complexity. A detailed numerical analysis demonstrates consistency with current neutrino oscillation data, yielding constrained predictions for the mixing angles and CP-violating phases. The Di…

Learning to Drift with Individual Wheel Drive: Maneuvering Autonomous Vehicle at the Handling Limits
Yihan Zhou, Yiwen Lu, Bo Yang, Jiayun Li, Yilin Mo
https://arxiv.org/abs/2507.23339

Learning to Drift with Individual Wheel Drive: Maneuvering Autonomous Vehicle at the Handling Limits
Drifting, characterized by controlled vehicle motion at high sideslip angles, is crucial for safely handling emergency scenarios at the friction limits. While recent reinforcement learning approaches show promise for drifting control, they struggle with the significant simulation-to-reality gap, as policies that perform well in simulation often fail when transferred to physical systems. In this paper, we present a reinforcement learning framework with GPU-accelerated parallel simulation and sys…