Perturbative double field theory on general backgrounds

Perturbative double field theory on general backgrounds
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一般背景下的微扰双场理论

DOI:
10.1103/physrevd.93.025032
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发表时间:
2016
期刊:
影响因子:
5
通讯作者:
D. Marques
D. Marques
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
O. Hohm;D. Marques

文献摘要

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围绕双场方程的任意解,建立了双场理论的微扰理论。精确规范变换以明显的背景协变方式书写,并且在场波动中最多包含二次项。我们将广义曲率标量扩展到涨落的三次阶,从而确定了明显背景协变形式的三次作用。作为第一个应用,我们将这一理论专门用于分组流形背景,例如带-通量。在全弦理论中,这对应于Wess-Zumino-Witten背景CFT。从闭弦场理论出发,Blumenhagen、Hassler和l<s:1> st之前已经计算过这些背景周围的立方作用。我们建立了与双场理论导出的三次作用的精确一致性。这一结果证实了双场理论适用于任意弯曲背景解,反驳了文献中与之相反的论断。
We develop the perturbation theory of double field theory around arbitrary solutions of its field equations. The exact gauge transformations are written in a manifestly background covariant way and contain at most quadratic terms in the field fluctuations. We expand the generalized curvature scalar to cubic order in fluctuations and thereby determine the cubic action in a manifestly background covariant form. As a first application we specialize this theory to group manifold backgrounds, such aswith-flux. In the full string theory this corresponds to a Wess-Zumino-Witten background CFT. Starting from closed string field theory, the cubic action around such backgrounds has been computed before by Blumenhagen, Hassler, and Lüst. We establish precise agreement with the cubic action derived from double field theory. This result confirms that double field theory is applicable to arbitrary curved background solutions, disproving assertions in the literature to the contrary.
DOI: 10.1002/prop.201300024
发表时间: 2013-09
期刊: Fortschritte der Physik
影响因子: --
作者:
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