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arXiv 2101.03376hep-thgr-qc
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高阶导数杂种优势双场论与经典双拷贝

Higher-derivative Heterotic Double Field Theory and Classical Double Copy

Eric Lescano, Jesús A. Rodríguez

摘要:

广义Kerr-Schild方法(GKSA)是构造二重场论(DFT)精确解的有力工具。在本文中,我们专注于DFT的杂种公式,考虑多达四个衍生条款的作用原理,而字段内容是由GKSA扰动。我们研究了广义版本的格林-施瓦茨机制,以重现低能量有效的杂化超引力参数化。这种形式主义再现高导数杂种优势背景解决方案的度量张量和Kalb-Ramond场的扰动由一对零向量。接下来,我们研究高阶导数对经典双拷贝结构的贡献。用一对$U(1)$规范场对零矢量进行适当的识别后,动力学由一对麦克斯韦方程组加上符合KLT关系的高阶导数修正给出。

英文摘要:

The generalized Kerr-Schild ansatz (GKSA) is a powerful tool for constructing exact solutions in Double Field Theory (DFT). In this paper we focus in the heterotic formulation of DFT, considering up to four-derivative terms in the action principle, while the field content is perturbed by the GKSA. We study the inclusion of the generalized version of the Green-Schwarz mechanism to this setup, in order to reproduce the low energy effective heterotic supergravity upon parametrization. This formalism reproduces higher-derivative heterotic background solutions where the metric tensor and Kalb-Ramond field are perturbed by a pair of null vectors. Next we study higher-derivative contributions to the classical double copy structure. After a suitable identification of the null vectors with a pair of $U(1)$ gauge fields, the dynamics is given by a pair of Maxwell equations plus higher derivative corrections in agreement with the KLT relation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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