Twisted elliptic multiple zeta values and non-planar one-loop open-string amplitudes

Twisted elliptic multiple zeta values and non-planar one-loop open-string amplitudes
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扭曲椭圆多重 zeta 值和非平面单环开弦振幅

DOI:
10.1088/1751-8121/aac601
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发表时间:
2018
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
通讯作者:
Schlotterer Oliver
Schlotterer Oliver
中科院分区:
--
文献类型:
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作者:
Broedel Johannes;Matthes Nils;Richter Gregor;Schlotterer Oliver

文献摘要

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我们考虑椭圆多重zeta值的推广,我们称之为扭曲椭圆多重zeta值。这些出现作为迭代积分的椭圆曲线,其中一个合理的晶格已被删除。在尖点处,扭曲的椭圆形的多个zeta值退化到分圆的多个zeta值,以同样的方式,椭圆形的多个zeta值退化到经典的多个zeta值。我们研究了扭曲椭圆多重zeta值的性质,并利用它们来计算四点单圈开超弦振幅的非平面部分。
We consider a generalization of elliptic multiple zeta values, which we call twisted elliptic multiple zeta values. These arise as iterated integrals on an elliptic curve from which a rational lattice has been removed. At the cusp, twisted elliptic multiple zeta values are shown to degenerate to cyclotomic multiple zeta values in the same way as elliptic multiple zeta values degenerate to classical multiple zeta values. We investigate properties of twisted elliptic multiple zeta values and utilize them in the evaluation of the non-planar part of the four-point one-loop open-superstring amplitude.