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Generalized Elliptic-Type Integrals and Generating Functions

open access: yesDemonstratio Mathematica, 2014
On account of analytical importance or application in certain problems in radiation physics and nuclear technology, several interesting families of elliptic-type integrals were recently studied by many authors.
Chaurasia V. B. L., Singh Yudhveer
doaj   +1 more source

One-loop open-string integrals from differential equations: all-order α′-expansions at n points

open access: yesJournal of High Energy Physics, 2020
We study generating functions of moduli-space integrals at genus one that are expected to form a basis for massless n-point one-loop amplitudes of open superstrings and open bosonic strings.
Carlos R. Mafra, Oliver Schlotterer
doaj   +1 more source

Two-loop leading colour QCD helicity amplitudes for top quark pair production in the gluon fusion channel

open access: yesJournal of High Energy Physics, 2021
We present a complete set of analytic helicity amplitudes for top quark pair production via gluon fusion at two-loops in QCD. For the first time, we include corrections due to massive fermion loops which give rise to integrals over elliptic curves.
Simon Badger   +3 more
doaj   +1 more source

Legendre-type relations for generalized complete elliptic integrals [PDF]

open access: yes, 2016
Legendre's relation for the complete elliptic integrals of the first and second kinds is generalized. The proof depends on an application of the generalized trigonometric functions and is alternative to the proof for Elliott's identity.
S. Takeuchi
semanticscholar   +1 more source

The role of elliptic integrals in calculating the gravitational lensing of a charged Weyl black hole surrounded by plasma

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2021
In this paper, we mainly aim at highlighting the importance of (hyper-)elliptic integrals in the study of gravitational effects caused by strongly gravitating systems.
Fathi, M., Villanueva, J.R.
doaj   +1 more source

On the curious series related to the elliptic integrals [PDF]

open access: yes, 2016
By using the theory of the elliptic integrals, a new method of summation is proposed for a certain class of series and their derivatives involving hyperbolic functions.
S. Yakubovich
semanticscholar   +1 more source

Elliptic polylogarithms and Feynman parameter integrals [PDF]

open access: yesJournal of High Energy Physics, 2019
In this paper we study the calculation of multiloop Feynman integrals that cannot be expressed in terms of multiple polylogarithms. We show in detail how certain types of two- and three-point functions at two loops, which appear in the calculation of ...
Johannes Broedel   +4 more
semanticscholar   +1 more source

A symbol and coaction for higher-loop sunrise integrals

open access: yesSciPost Physics Core, 2023
We construct a symbol and coaction for the $l$-loop sunrise family of integrals, both for equal-mass and generic-mass cases. These constitute the first concrete examples of symbols and coactions for integrals involving Calabi-Yau threefolds and higher ...
Andreas Forum, Matt von Hippel
doaj   +1 more source

Sharp approximations for the complete elliptic integrals of the second kind by one-parameter means

open access: yesJournal of Mathematical Analysis and Applications, 2018
Let E ( r ) be the complete elliptic integrals of the second kind and J p ( a , b ) be the one-parameter mean of two distinct positive numbers a and b defined by J p ( a , b ) = p p + 1 a p + 1 − b p + 1 a p − b p  for  p ≠ − 1 , 0 .
Zhen-Hang Yang
semanticscholar   +1 more source

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