Results 21 to 30 of about 774 (251)

Elliptic symbol calculus: from elliptic polylogarithms to iterated integrals of Eisenstein series

open access: yesJournal of High Energy Physics, 2018
We present a generalization of the symbol calculus from ordinary multiple polylogarithms to their elliptic counterparts. Our formalism is based on a special case of a coaction on large classes of periods that is applied in particular to elliptic ...
Johannes Broedel   +4 more
doaj   +1 more source

The unpolarized two-loop massive pure singlet Wilson coefficients for deep-inelastic scattering

open access: yesNuclear Physics B, 2019
We calculate the massive two–loop pure singlet Wilson coefficients for heavy quark production in the unpolarized case analytically in the whole kinematic region and derive the threshold and asymptotic expansions.
J. Blümlein   +3 more
doaj   +1 more source

High-precision calculation of the 4-loop QED contribution to the slope of the Dirac form factor

open access: yesPhysics Letters B, 2020
We have evaluated with 1100 digits of precision the contribution of all the 891 mass-independent 4-loop Feynman diagrams contributing to the slope of the Dirac form factor in QED.
Stefano Laporta
doaj   +1 more source

Corrections in “Tables of Complete Elliptic Integrals” [PDF]

open access: yesJournal of Mathematics and Physics, 1941
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

High-precision calculation of the 4-loop contribution to the electron g-2 in QED

open access: yesPhysics Letters B, 2017
I have evaluated up to 1100 digits of precision the contribution of the 891 4-loop Feynman diagrams contributing to the electron g-2 in QED. The total mass-independent 4-loop contribution is ae=−1.912245764926445574152647167439830054060873390658725345 ...
Stefano Laporta
doaj   +1 more source

Integrals involving complete elliptic integrals

open access: yesJournal of Computational and Applied Mathematics, 1999
The authors have evaluated certain integrals involving complete elliptic integrals \(K(k)\) and \(E(k)\). Several special cases are mentioned. The interested readers are referred to [\textit{S. L. Kalla} and \textit{Bader N. Al-Saqabi}; Res. Math. 20, No. 1/2, 507-516 (1991; Zbl 0767.33016)].
Cvijovic, Djurdje, Klinowski, Jacek
openaire   +2 more sources

Fishnet four-point integrals: integrable representations and thermodynamic limits

open access: yesJournal of High Energy Physics, 2021
We consider four-point integrals arising in the planar limit of the conformal “fishnet” theory in four dimensions. They define a two-parameter family of higher-loop Feynman integrals, which extend the series of ladder integrals and were argued, based on ...
Benjamin Basso   +4 more
doaj   +1 more source

QED contributions to electron g-2

open access: yesEPJ Web of Conferences, 2018
In this paper I briefly describe the results of the numerical evaluation of the mass-independent 4-loop contribution to the electron g-2 in QED with 1100 digits of precision. In particular I also show the semi-analytical fit to the numerical value, which
Laporta Stefano
doaj   +1 more source

On the Complete Elliptic Integrals and Babylonian Identity XII: The Complete Elliptic Integral of First Kind and Power Series Representation [PDF]

open access: yesThe Bulletin of Society for Mathematical Services and Standards, 2014
We developed a new power series representation of the complete elliptic integral of first kind.
Edigles Guedes, K. Raja Rama Gandhi
openaire   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

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