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arXiv 0908.3303hep-th
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引力非线性电动力学中的静电球对称组态

Electrostatic spherically symmetric configurations in gravitating nonlinear electrodynamics

J. Diaz-Alonso, D. Rubiera-Garcia

摘要:

研究了三维空间中最小耦合到广义非线性阿贝尔规范模型的爱因斯坦场方程的引力静电球对称解。这些模型是由拉格朗日密度定义的,拉格朗日密度是规范场不变量的一般函数,并受某些物理容许条件的限制。它们包括类的非线性电动力学支持ESS非拓扑孤子解决方案,在没有重力。我们建立了可容许模型的G-ESS解的定性结构完全由ESS解在平坦空间中的渐近性和中心场行为(或者等价地,由拉格朗日密度在真空中的行为和在其定义域的边界点上的行为,其中第二规范不变量为零)来表征。在平坦空间中支持发散能量ESS解的容许模型的这些G-ESS配置的结构定性地与Reissner-Nordström情况相同。相比之下,G-ESS配置的模型支持有限能量ESS解决方案在平坦的空间表现出新的定性功能,这是讨论的ADM质量,电荷和孤子能量。大多数的结果有关著名的模型,如电动力学的麦克斯韦,玻恩-因菲尔德和欧拉-海森堡有效拉格朗日的QED,最低限度地耦合到引力,被证明是推论的一般陈述本分析。

英文摘要:

We perform a study of the gravitating electrostatic spherically symmetric (G-ESS) solutions of Einstein field equations minimally coupled to generalized non-linear abelian gauge models in three space dimensions. These models are defined by lagrangian densities which are general functions of the gauge field invariants, restricted by some physical conditions of admissibility. They include the class of non-linear electrodynamics supporting ESS non-topological soliton solutions in absence of gravity. We establish that the qualitative structure of the G-ESS solutions of admissible models is fully characterized by the asymptotic and central-field behaviours of their ESS solutions in flat space (or, equivalently, by the behaviour of the lagrangian densities in vacuum and on the point of the boundary of their domain of definition, where the second gauge invariant vanishes). The structure of these G-ESS configurations for admissible models supporting divergent-energy ESS solutions in flat space is qualitatively the same as in the Reissner-Nordström case. In contrast, the G-ESS configurations of the models supporting finite-energy ESS solutions in flat space exhibit new qualitative features, which are discussed in terms of the ADM mass, the charge and the soliton energy. Most of the results concerning well known models, such as the electrodynamics of Maxwell, Born-Infeld and the Euler-Heisenberg effective lagrangian of QED, minimally coupled to gravitation, are shown to be corollaries of general statements of this analysis.

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