Results 121 to 130 of about 53,557 (225)
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
Efficient Gaussian Simulations of Fermionic Open Quantum Systems
Advanced Quantum Technologies, Volume 9, Issue 4, April 2026.Building upon Bravyi's fundamental theoretical framework, efficient classical simulation methods are reviewed and further developed for general fermionic Gaussian processes. The emphasis remains on a unified approach applicable to generic fermionic Gaussian operations.
Yinan Fang +3 more
wiley +1 more source
Results in OpticsIn this work, we describe an algorithm based on Polynomial-Chaos (PC) expansions for the study of uncertainty quantification problems involving grating filters.
Aristeides D. Papadopoulos +3 more
doaj +1 more source
Dynamic graph and polynomial chaos based models for contact tracing data analysis and optimal testing prescription. [PDF]
J Biomed Inform, 2021 Ubaru S, Horesh L, Cohen G.
europepmc +1 more source
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 4, April 2026.ABSTRACT The Duffing oscillator is often considered as “the” prototype of a nonlinear oscillator as it exhibits many characteristic phenomena of nonlinear dynamics. One of these phenomena is the occurrence of multiple periodic solutions as considered here for the case of the harmonically excited slightly damped Duffing oscillator.
Hannes Dänschel +3 more
wiley +1 more source
Journal of Advances in Modeling Earth Systems, Volume 18, Issue 4, April 2026.Abstract Solving probabilistic weather forecasts is challenging due to computational constraints and the nonlinear nature of Earth atmosphere. This study proposes a proof‐of‐concept to address these challenges by solving the Liouville equation, that is, the analytical solution for probabilistic forecasts, with data‐driven method.
Kai‐Chih Tseng, Ray Kuo, Yi‐An Feng
wiley +1 more source
Reliability-Based Design Optimization Applied to a Rotor Supported by Hydrodynamic Bearings
MachinesRotating machines are an important part of industrial equipment. It is essential to improve their performance while reducing the manufacturing, operating, and maintenance costs.
Helio Fiori de Castro +2 more
doaj +1 more source
Multivariate Local Polynomial Regression with Application to Shenzhen Component Index
Discrete Dynamics in Nature and Society, 2011 This study attempts to characterize and predict stock index series in Shenzhen stock market using the concepts of multivariate local polynomial regression.
Liyun Su
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Buckling Sensitivity of Tow-Steered Plates Subjected to Multiscale Defects by High-Order Finite Elements and Polynomial Chaos Expansion. [PDF]
Materials (Basel), 2021 Sanchez-Majano AR +3 more
europepmc +1 more source
A New Orthogonal Geomagnetic Coordinate System: The Generalized Eccentric Dipole
Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.Abstract The study of near‐Earth plasma environment relies heavily on accurate geomagnetic coordinate systems, mainly because the plasma motion is controlled by the E×B $\boldsymbol{E}\times \boldsymbol{B}$ drift and thus is constrained by the structure of the magnetic field.
Antoine Resseguier +2 more
wiley +1 more source