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arXiv 2602.11267hep-thgr-qc
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Kosmann导数与动量映射:从双模协变框架出发

Kosmann derivative and momentum maps from a duality covariant framework

Universidad San Sebastián(圣塞巴斯蒂安大学);University of Wroclaw(弗罗茨瓦夫大学);Universidad Argentina de la Empresa (UADE)(阿根廷企业大学)

Romina Ballesteros, Eric Lescano, Jesús A. Rodríguez

AI总结:

本文通过双模协变框架,展示了广义Kosmann导数如何通过广义流和补偿项实现,从而提供协变的广义微分同胚实现,并解释了超引力层面的动量映射。

摘要:

在局部对称性存在的情况下,实现微分同胚的协变性是引力理论的一个非平凡方面。在双场理论中,这是通过所谓的广义Kosmann导数来实现的。在本工作中,我们证明广义Kosmann导数可以通过完全基于广义流的自然形式来表述,通过引入一个起补偿作用的项,该项起到广义动量映射的作用,从而得到一个完全确定且协变的算子,提供了一个协变的广义微分同胚实现。当以杂化超引力的场内容参数化时,所得到的对称变换在超引力层面产生动量映射,提供了这些对象的对偶协变解释。该框架为在双几何中具有内部对称性的守恒电流和诺特荷的构造提供了自然的环境,对黑洞热力学及其高阶导数修正在对偶协变设定下的直接影响。

英文摘要:

A covariant implementation of diffeomorphisms in the presence of local symmetries is a nontrivial aspect of gravitational theories. In Double Field Theory, this is achieved through the so-called generalized Kosmann derivative. In this work, we show that the generalized Kosmann derivative admits a natural formulation entirely in terms of generalized fluxes through the inclusion of a compensating term that plays the role of a generalized momentum map, yielding a fully determined and covariant operator that provides a covariant realization of generalized diffeomorphisms. When parameterized in terms of the field content of heterotic supergravity, the resulting symmetry transformations give rise to momentum maps at the supergravity level, offering a duality-covariant interpretation of these objects. This framework provides a natural setting for the construction of conserved currents and Noether charges in doubled geometry with internal symmetries, with direct implications for black hole thermodynamics and its higher-derivative corrections in a duality-covariant setting.

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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