Centre National de la Recherche Scientifique

Two-dimensional topological quantum chemistry and catalog of topological materials

Two-dimensional (2D) topological materials host symmetry-protected, disorder-robust edge states central to quantum technologies. Yet they remain scarce compared with their 3D counterparts. We adapted the topological quantum chemistry formalism to layer groups and studied the band...

Infinite simple characteristic quotients

We construct continuum many infinite, simple, characteristic quotients of non-abelian free groups, answering a 1978 question of James Wiegold. The method is very flexible, allowing to impose certain properties on the quotients, to generalize the construction to large classes of g...

Measurements of the production of W$$^{\pm }$$ and Z$$^0$$ bosons in pp collisions at $$\sqrt{s} = 13$$ TeV

Abstract Measurements of the production of the W $$^{\pm }$$ ± and Z $$^0$$ 0 bosons at midrapidity in pp collisions at $$\sqrt{s} = 13$$ s = 13 TeV with ALICE at the Large Hadron Collider (LHC) are presented. The W $$^{\pm }$$ ± and Z $$^0$$ 0 bosons are detected via their (di)e...

A structure-preserving method of fundamental solutions for the multi-phase Mullins–Sekerka flow

A charge simulation method, a variant of the method of fundamental solutions, is applied to approximate the multi-phase Mullins–Sekerka flow in R 2 and in a half-plane H bounded by a Neumann wall W . In the underlying mathematical model, interfaces driven by their curvature are c...

Green-Synthesized CuO Nanoparticles from Pomegranate Peel for Dual Electrochemical Detection and Adsorptive Removal of Tetracycline

Green nanomaterials have attracted considerable attention for environmental monitoring due to their sustainability and multifunctional properties. In this study, copper oxide nanoparticles were synthesized using pomegranate peel (pp) extract (CuO@PP) as a reducing and stabilizing...

WKB for semiclassical operators: How to fly over caustics (and more)

The method initiated by Wentzel, Kramers, and Brillouin to find approximate solutions to the Schrödinger equation lies at the origin of the spectacular development of microlocal and semiclassical analysis. When used naively, the approach appears to break down at caustics, but Mas...

An optimized construction of lie algebra generator pools for variational quantum eigensolvers in chemistry

Abstract Lie algebras are essential mathematical structures used in physics to describe sets of quantum operators. Identifying a minimal set of generators to construct these algebras is a central challenge. The traditional search for such generators relies on greedy construction...

Post-disturbance temperate reef states influence fish contributions to nature and people

Abstract Background Climate-driven habitat reorganization is reshaping the capacity of marine ecosystems to sustain biodiversity and human well-being, with implications for SDG 14 (Life Below Water) and SDG 2 (Zero Hunger). Yet, it remains unclear to what extent post-disturbance...

Vocal encoding of heritable sociability prevails over emotions in sheep bleats

Vocalizations of animals are good indicators of their emotions. Temperament is known to influence the regulation and expression of emotions. However, how animal temperament affects their vocalizations and particularly their vocal expressions of emotions remains largely unexplored...

Incorporating sliding and local rigidity constraints in neural-based image registration

Image registration is widely used in various applications to estimate the deformations of moving structures in image pairs acquired at different times. Spatial regularization strategies often take a one-size-fits-all approach by imposing uniform deformation constraints across the...

Dual northward overseas radiation from Japanese islands shaped the phylogeography of North-East Asian tree frog

The tree frog Dryophytes japonicus has a broad geographic distribution in northeastern Asia, comprising two major genetically divergent clades whose geographic boundary is located within the Japanese mainland. However, the evolutionary and adaptive mechanisms underlying this wide...

Ligand-Mediated Control of Zn x Se y Intermediates for Defect-Free ZnSe Heteroepitaxy on Quantum Dots

Abstract ZnSe is a cornerstone shell material for enhancing the efficiency and stability of quantum dots (QDs). However, the chemical mechanisms governing detrimental zinc vacancy (VZn) formation remain unclear, limiting the predictive synthesis of high-quality heterostructures....

Validation of EarthCARE CPR reflectivity using the ACTRIS cloud radar network

The Earth Cloud, Aerosol, and Radiation Explorer (EarthCARE) satellite carries a cloud profiling radar (CPR) designed to observe global cloud properties. In this study, we assess the calibration of CPR reflectivity profiles by comparing them with seven calibrated ground-based clo...

Design of Potent, Non-Toxic Antimicrobial Agents Derived from the Frog Skin Peptide Raniseptin-PL Active Against Gram-Negative ESKAPE+ Pathogens

Background/Objectives: The frog skin peptide raniseptin-PL (GVFDTVKKIGKAVGKFALGVAKNYLNS.NH2) is active against a range of antibiotic-resistant bacteria including ESKAPE+ pathogens, but its therapeutic potential is limited by high cytotoxicity against mammalian cells. The study ai...

Human pressure, habitat heterogeneity and species traits jointly determine the level of dark diversity in coastal fish communities

Understanding how anthropogenic pressures and environmental gradients shape coastal fish communities is a central question in biogeography and marine conservation. Yet, the set of species expected to occur at a site given ecological conditions but being absent – the so‐called dar...

Generative surrogate modelling for the efficient design optimization of an RF component

Accurate and efficient design of millimeter-wave components is critical for sixth-generation (6 G) wireless systems, particularly at the D-band where low-loss interconnects are required. Vertically aligned carbon-nanotube (VACNT)–based air-filled waveguides (AFWGs) have recently...

Faster Hamiltonian Monte Carlo by learning leapfrog scale: an offline randomized solution

Abstract We introduce a Hamiltonian Monte Carlo (HMC) methodology based on an offline empirical calibration of randomized leapfrog parameters. The approach, referred to as eHMC, where e stands for empirical, leverages importance sampling to construct an empirical distribution on...

Data for: Transposable elements drive phenotypic variation and shape the response to environmental changes in Drosophila melanogaster

Data of the phenotypic measurements and the transposable element insertions with the corresponding scripts.

Solving Stengle’s Example in Rational Arithmetic: Exact Values of the Moment-SOS Relaxations

We revisit Stengle’s classical univariate polynomial optimization example min 1 - x 2 s.t. ( 1 - x 2 ) 3 ≥ 0 whose constraint description is degenerate at the minimizers. We prove that the moment-SOS hierarchy of relaxation order r ≥ 3 has the exact value - 1 / ( r ( r - 2 ) ) ....

The influence of force on the encoding and perception of affective touch

Abstract Stroking touch has been shown to be most pleasant at intermediate velocities of 1-10 cm.s −1 , which relates well to the activity of C-low threshold mechanoreceptors (C-LTMRs), also called C-tactile afferents in humans, that have been implicated in encoding positive affe...