Results 111 to 120 of about 566,000 (274)
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
Two-loop kite master integral for a correlator of two composite vertices
Journal of High Energy Physics, 2019 We consider the most general two-loop massless correlator I(n 1 , n 2 , n 3 , n 4 , n 5; x, y; D) of two composite vertices with the Bjorken fractions x and y for arbitrary indices {n i } and space-time dimension D; this correlator is represented by a ...
S. V. Mikhailov, N. Volchanskiy
doaj +1 more source
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
THz‐Driven Coherent Phonon Fingerprints of Hidden Symmetry Breaking in 2D Layered Hybrid Perovskites
Advanced Materials, Volume 38, Issue 4, 16 January 2026.Intense THz pulses are employed to drive coherent phonons in 2D Ruddlesden‐Popper hybrid metal‐halide perovskites (HOIPs) from the (PEA)2(MA)n‐1PbnI3n+1 family, revealing mode‐selective spectroscopic signatures of inversion symmetry breaking in those nominally centrosymmetric materials. These findings provide a handle to decode nonlinear phonon driving
Joanna M. Urban +14 more
wiley +1 more source
Understanding zeros and splittings of ordered tree amplitudes via Feynman diagrams
Journal of High Energy PhysicsIn this paper, we propose new understandings for recently discovered hidden zeros and novel splittings of scattering amplitudes, by utilizing Feynman diagrams.
Kang Zhou
doaj +1 more source
Study of resonant inelastic light scattering in Keldysh–Schwinger functional integral formalism
New Journal of Physics, 2013 The scattering cross-section of the resonant inelastic light scattering is represented as a correlation function in the Keldysh–Schwinger functional integral formalism.
H C Lee
doaj +1 more source
ALOHA: Automatic libraries of helicity amplitudes for Feynman diagram computations [PDF]
Computer Physics Communications, 2011 P. Aquino +4 more
semanticscholar +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
Condensed Matter Physics, 2015 The partial summing of infinite range of diagrams for the two-phonon mass operator of polaron described by Frohlich Hamiltonian is performed using the Feynman-Pines diagram technique.
M.V. Tkach +3 more
doaj +1 more source