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arXiv 0708.0636hep-th
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具有非拓扑孤子解的广义规范场理论

Generalized gauge field theories with non-topological soliton solutions

Joaquin Diaz-Alonso, Diego Rubiera-Garcia

摘要:

本文系统地分析了紧致半单李群的\textit{generalized}规范场理论在三维空间中表现出静电球对称非拓扑孤子解的条件。通过术语\textit{generalized},我们的意思是,有关领域的动力学是由拉格朗日密度,这是一般功能的二次场不变量,导致物理上一致的模型。分析详尽地定义了这类拉格朗日模型支持这些孤立子解决方案,并导致其明确的确定方法。建立了有限能量解对保电荷扰动的线性稳定性的充分必要条件,超越了通常只提供必要条件的Derrick判据.

英文摘要:

We perform a systematic analysis of the conditions under which \textit{generalized} gauge field theories of compact semisimple Lie groups exhibit electrostatic spherically symmetric non-topological soliton solutions in three space dimensions. By the term \textit{generalized}, we mean that the dynamics of the concerned fields is governed by lagrangian densities which are general functions of the quadratic field invariants, leading to physically consistent models. The analysis defines exhaustively the class of this kind of lagrangian models supporting those soliton solutions and leads to methods for their explicit determination. The necessary and sufficient conditions for the linear stability of the finite-energy solutions against charge-preserving perturbations are established, going beyond the usual Derrick-like criteria, which only provides necessary conditions.

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