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Common misconceptions in crystallography and crystal optics
Journal of Applied Crystallography, EarlyView.Six recurrent misconceptions in crystallography, some involving mineral and crystal optics, are analyzed and discussed. The explanation of these and similar misconceptions could serve as educational resources for teachers.Did you know that an X‐ray diffraction pattern is not a spectrum?
Lluís Casas
wiley +1 more source
Financial Time Series Uncertainty: A Review of Probabilistic AI Applications
Journal of Economic Surveys, EarlyView.ABSTRACT Probabilistic machine learning models offer a distinct advantage over traditional deterministic approaches by quantifying both epistemic uncertainty (stemming from limited data or model knowledge) and aleatoric uncertainty (due to inherent randomness in the data), along with full distributional forecasts.
Sivert Eggen +4 more
wiley +1 more source
A New Space-Time Theory Unravels the Origins of Classical Mechanics for the Dirac Equation
Quantum ReportsThe Feynman path integral plays a central role in quantum mechanics, linking classical action to propagators and relating quantum electrodynamics (QED) to Feynman diagrams.
Wei Wen
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Alphabet of one-loop Feynman integrals *
, 2022 Jiaqi Chen, Chichuan Ma, Li Lin Yang
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Integration-by-parts identities and differential equations for parametrised Feynman integrals [PDF]
, 2023 Daniele Artico, Lorenzo Magnea
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Measure‐valued processes for energy markets
Mathematical Finance, Volume 35, Issue 2, Page 520-566, April 2025.Abstract We introduce a framework that allows to employ (non‐negative) measure‐valued processes for energy market modeling, in particular for electricity and gas futures. Interpreting the process' spatial structure as time to maturity, we show how the Heath–Jarrow–Morton approach can be translated to this framework, thus guaranteeing arbitrage free ...
Christa Cuchiero +3 more
wiley +1 more source
A Feynman integral and its recurrences and associators
Nuclear Physics B, 2016 We determine closed and compact expressions for the ϵ-expansion of certain Gaussian hypergeometric functions expanded around half-integer values by explicitly solving for their recurrence relations.
Georg Puhlfürst, Stephan Stieberger
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Journal of Computational Chemistry, Volume 47, Issue 1, 05 January 2026.Two new strategies that include the convergence of the one‐particle reduced density matrix (1‐RDM) were introduced in Variational Quantum Eigensolvers (VQE). Improved energy and, most importantly, density‐based properties (dipole moments, electron density) were obtained.
Amanda Marques de Lima +3 more
wiley +1 more source
Advanced Materials Interfaces, Volume 13, Issue 1, 7 January 2026.Magnetoresistance measurements on a series of polycrystalline cesium tin iodide (CsSnI3) thin film devices having varying grain sizes reveal no power law dependence with clear signatures of weak anti‐localization (spin‐orbit coupling). Surprisingly, the extracted phase coherence lengths are found to be independent of grain sizes.
Aungkan Sen +6 more
wiley +1 more source
Advanced Science, Volume 13, Issue 2, 9 January 2026.This study introduces an organic anion‐coordination for oxidation suppression (OCOS) strategy using alkali metal–organic anions (e.g., KEtO) to stabilize Sn2+ in lead‐free Sn‐based perovskites for PeLEDs. By coordinating with Sn2+ and inhibiting vacancies, OCOS enhances film quality, EQE (to 10.01% at 638 nm), and luminance (to 139.9 cd m−2 ...
Seungjae Lee +15 more
wiley +1 more source