Research works

Resolving Transient Electron–Phonon Coupling with Time-Resolved Spontaneous Raman Spectroscopy

Abstract Understanding the interaction of charge carriers with lattice vibrations in the quasi-equilibrium regime is crucial for semiconductor functionality. However, the structural signatures of these interactions are often too subtle for conventional ultrafast techniques to det...

Semi-Supervised Generative Learning via Latent Space Distribution Matching

We introduce Latent Space Distribution Matching (LSDM), a novel framework for semi-supervised generative modeling of conditional distributions. LSDM operates in two stages: (i) learning a low-dimensional latent space from both paired and unpaired data, and (ii) performing joint d...

An augmented ratingsystem for Test cricket: adapting the Glicko rating system

Abstract The International Cricket Council’s (ICC) rating system for Test cricket updates a team’s rating from match and series results alone. It makes no allowance for the precision of a rating, nor for contextual factors such as home advantage and the outcome of the toss. This...

Suppression of spectral gap and flat bands on a cuprate superconductor side-surface

Abstract Side surfaces of cuprate superconductors are expected to display a suppressed d -wave order parameter and zero-energy topological flat bands with a large density of states, making them susceptible to symmetry broken orders. Yet such surfaces have never been investigated...

The Infinite Block Spin Ising Model

Abstract We study a block mean-field Ising model with N spins split into $$s_N$$ s N blocks, with Curie–Weiss interaction within blocks and nearest-neighbor coupling between blocks. While previous models deal with the block magnetization for a fixed number of blocks, we study the...

Explicit construction of spherical 5- and 7-designs

This paper develops an explicit and implementable framework for constructing spherical designs by lifting point sets from tight fusion frames. By combining existing ingredients, we obtain, in every dimension, explicit spherical $5$-designs with $|X|=\mathcal{O}(d^3)$. As a core c...

Product of Powers of Distinct Primes as Sums of Fibonacci Numbers

Abstract Let $$F_n$$ F n be the n -th Fibonacci number. In this paper, we study the Diophantine equation $$F_n+F_m=p^xq^y$$ F n + F m = p x q y in nonnegative integers $$n\ge m$$ n ≥ m , x and y , where p and q are fixed distinct prime numbers. We determine all pairs of primes (...

Anomaly-free hyperspherical Hamiltonian spaces for simple reductive groups

In this paper, we provide a complete list of anomaly-free hyperspherical Hamiltonian spaces for simple reductive groups, as well as their conjectural dual spaces in the sense of BZSV duality.

A numerical simulation study on the reduction performance of ship resistance with bionic hydrofoil appendages

With stringent ship energy-efficiency and emission requirements, ship rapidity has gained attention, and Computational Fluid Dynamics (CFD) is key for resistance prediction. Inspired by humpback whale pectoral-fin leading-edge tubercles, this study proposes bionic hydrofoil appen...

Do Children Who Develop Faster Go on to Age Faster in Midlife?

We quantified the association between rate of child development and pace of midlife aging in the Dunedin Study and the Add Health Study. Physical development was quantified in Dunedin participants ( N = 1,037; age 45) using a composite comprised of (1) birth weight for gestationa...

Gouvernance participative et planification du transport ferroviaire : quels enjeux pour les SERM ?

Participatory governance, seen as a key lever to guide and legitimize public action in urban planning and mobility, is at the heart of French Metropolitan Regional Express Services (SERM) projects. However, their specificities - service-oriented, multimodal, multiscale and multis...

Lifts of endomorphisms of Weyl algebras modulo p2

Let φ denote a k -algebra endomorphism of the n -th Weyl algebra A n ( k ) over a perfect field k of positive characteristic p . We prove that φ can be lifted to an endomorphism of the Weyl algebra A n ( W 2 ( k ) ) over the Witt vectors W 2 ( k ) of length two over k if and only...

Bose-Einstein condensate stars in massive gravity

This study explores the construction, validity and the properties of Boson or Bose-Einstein condensate (BEC) stars under the framework of de Rham-Gabadadze-Tolley (dRGT) like massive gravity, employing the Kuchowicz metric potential to model their internal structure. This gravita...

Biochar amendments in a California salt marsh restoration reduced denitrification and supported distinct microbial community functions

Accelerated sea level rise, combined with human-induced changes to hydrology and sediment transport, threatens the long-term persistence of coastal wetlands. Sediment addition is increasingly used to enhance wetland resilience to sea level rise, and incorporating biochar, a carbo...

Non-stationary time series attribution for heatwaves over Europe

The increasing occurrence of extreme weather events since the beginning of the 21st century has led to the development of new methods to attribute extreme events to anthropogenic climate change. The way in which the extreme event is defined has a major influence on the attributio...

Transitioning late-time cosmology with the Hubble parameterization

We investigate a late-time cosmological model for a homogeneous and isotropic space-time in the Rastall theory. We explore the observational constraints on the Hubble parameter by using the latest cosmological datasets such as cosmic microwave background radiation (Planck), baryo...

Geometry-enforced topological chiral fermions in amorphous chiral metals

Since the prediction and observation of topological Weyl semimetals (chiral TSMs), there have been enormous efforts to characterize further condensed matter realizations of chiral fermions. These efforts were dramatically accelerated by the subsequent discovery of a profound link...

High-Precision Differential Radial Velocities of C3PO Wide Binaries: A Test of Modified Newtonian Dynamics (MOND)

Wide-binary stars, separated by thousands of AU, reside in low-acceleration regimes where Modified Newtonian Dynamics (MOND) predicts deviation from Newtonian gravity. However, Gaia radial velocities (RVs) lack the precision to resolve the small velocity differences expected in t...

On the Lavrentiev Gap for Manifold-Valued Maps

Abstract We characterize necessary and sufficient conditions ensuring approximation by smooth maps in the Sobolev space $$W^{1,\varphi }$$ W 1 , φ between suitable compact manifolds, where the prototypical example of Young function $$\varphi $$ φ is the double-phase integrand.

Teaching, selling or both? Exploring presumed influence effects of edu-ads on parents’ mediation intent

Purpose Edu-ads represent a hybrid form of media in which an educational lesson is packaged in an ad-like, persuasive format. This study aims to investigate parents’ perceptions of the effect of edu-ads on children and their subsequent mediation intentions. Design/methodology/app...