Results 1 to 10 of about 265,515 (389)

Two-loop Sunset Integrals at Finite Volume [PDF]

open access: yesJHEP 1401 (2014) 019, 2013
We show how to compute the two-loop sunset integrals at finite volume, for non-degenerate masses and non-zero momentum. We present results for all integrals that appear in the Chiral Perturbation Therory ($\chi$PT) calculation of the pseudoscalar meson masses and decay constants at NNLO, including the case of Partially Quenched $\chi$PT.
Bijnens, Johan   +2 more
arxiv   +5 more sources

On evaluation of two-loop self-energy diagram with three propogator [PDF]

open access: yesPhys.Rev. D50 (1994) 7735-7737, 1994
Small momentum expansion of the "sunset" diagram with three different masses is obtained. Coefficients at powers of $p^2$ are evaluated explicitly in terms of dilogarithms and elementary functions. Also some power expansions of "sunset" diagram in terms of different sets of variables are given.
A. Erdelyi   +9 more
arxiv   +3 more sources

The elliptic dilogarithm for the sunset graph [PDF]

open access: yesJournal of Number Theory, Volume 148, March 2015, Pages 328-364, 2013
We study the sunset graph defined as the scalar two-point self-energy at two-loop order. We evaluate the sunset integral for all identical internal masses in two dimensions. We give two calculations for the sunset amplitude; one based on an interpretation of the amplitude as an inhomogeneous solution of a classical Picard-Fuchs differential equation ...
Bloch, Spencer, Vanhove, Pierre
arxiv   +4 more sources

Threshold and pseudothreshold values of the sunset diagram [PDF]

open access: yesPhys.Lett. B426 (1998) 95-104, 1997
Analytic results for the threshold and pseudothreshold values of the sunset diagram with arbitrary masses are obtained in terms of dilogarithms of ratios of the masses.
Berends, F. A.   +2 more
arxiv   +3 more sources

At Sunset [PDF]

open access: yesIndialogs: Spanish Journal of India Studies, 2016
A short story that reflects the horror, sadness and injustice of the death of a boy of sixteen during the Sri Lankan civil war.
Aparna Halpe
doaj   +5 more sources

The last sunset on mainland Europe [PDF]

open access: yesCartography and Geographic Information Science (2016), 2014
This paper documents the places in mainland Europe at which the sun sets latest, by Coordinated Universal Time (UTC), on any given day (distortion due to differences in local standard times is ignored). In contradiction to the na\"ive assumption that the sun always sets latest at the westernmost point, the point of last sunset changes cyclically over ...
Mira, Jorge
arxiv   +6 more sources

On the thermal sunset diagram for scalar field theories [PDF]

open access: yesPhys.Rev.D68:076002,2003, 2003
We study the so-called `` sunset diagram'', which is one of two-loop self-energy diagrams, for scalar field theories at finite temperature. For this purpose, we first find the complete expression of the bubble diagram, the one-loop subdiagram of the sunset diagram, for arbitrary momentum.
A.J. Niemi   +30 more
arxiv   +3 more sources

Sunset [PDF]

open access: yesAMA Journal of Ethics, 2019
This image of a silhouetted figure looking out over a body of water at sunset aims to promote reflection about patients' feelings of sadness, despair, helplessness, and uncertainty upon being diagnosed.
Antonio Yaghy
openaire   +3 more sources

Two-loop sunset diagrams with three massive lines [PDF]

open access: yesNucl.Phys. B738 (2006) 306-316, 2005
In this paper, we consider the two-loop sunset diagram with two different masses, m and M, at spacelike virtuality q^2 = -m^2. We find explicit representations for the master integrals and an analytic result through O(epsilon) in d=4-2epsilon space-time dimensions for the case of equal masses, m = M.
A.I. Onishchenko   +45 more
arxiv   +5 more sources

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