Results 121 to 130 of about 71,268 (259)
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
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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
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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
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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
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Aggregate, Volume 7, Issue 1, January 2026.The electronic spectra, luminescence decay measurements at room temperature and 77 K, and persistent luminescence have been recorded for pristine hexagonal and cubic CsCdCl3 and for this material doped with Mn2+ or Fe3+. First‐principles calculations have been performed in order to rationalize the results.
Daiwen Xiao +6 more
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Weight Systems from Feynman Diagrams
Journal of Knot Theory and Its Ramifications, 1998 We find that the overall UV divergences of a renormalizable field theory with trivalent vertices fulfil a four-term relation. They thus come close to establish a weight system. This provides a first explanation of the recent successful association of renormalization theory with knot theory.
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Annalen der Physik, Volume 538, Issue 1, January 2026.The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
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Asymptotic Estimates of Feynman Diagrams
Physics Letters B, 1977 We derive asymptotic estimates for the most likely value of generical very high order Feynman diagram.
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Ferroelectric Domains and Evolution Dynamics in Twisted CuInP2S6 Bilayers
Small Methods, Volume 10, Issue 1, 10 January 2026.A novel mechanism to control ferroelectric and antiferroelectric domains in bilayer twisted CIPS via Moiré superlattices and interlayer coupling. Combined DFT and MLMD simulations reveal the twist‐angle‐dependent domain evolution, offering mechanistic insights and design principles for controllable domain switching and programmable nano electronic ...
Dongyu Bai +6 more
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Unified Asymptotics for Investment Under Illiquidity: Transaction Costs and Search Frictions
Mathematical Finance, Volume 36, Issue 1, Page 67-98, January 2026.ABSTRACT This paper investigates the optimal investment problem in a market with two types of illiquidity: transaction costs and search frictions. We analyze a power‐utility maximization problem where an investor encounters proportional transaction costs and trades only when a Poisson process triggers trading opportunities.
Tae Ung Gang, Jin Hyuk Choi
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