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arXiv 1606.07730hep-th
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关于Fake Supersymmetry的评论

Comments on fake supersymmetry

Juan Diaz Dorronsoro, Brecht Truijen, Thomas Van Riet

摘要:

平面畴壁和球形黑洞是耦合二阶常微分方程的哈密顿形式的解决方案。哈密顿-雅可比理论则意味着一阶流动方程总是存在的(可能直到孤立子流形)。如果一阶方程以一种特定的方式分解,它们就采取了一种被称为假超对称的形式。我们指出,这种因式分解总是可能的零温度。因此,我们提出了一个不太通用的假超对称性的定义,其中涉及的边界条件在一个非平凡的方式,我们分析其物理相关性。例如,吸引子流在我们限定的意义上必然是假超对称的。为了说明的定义,我们提供了新的解析解的轴子-介子畴壁与假的超势,认为不存在。

英文摘要:

Flat domain walls and spherical black holes are solutions to coupled second-order ODE's of the Hamiltonian form. Hamilton-Jacobi theory then implies that first-order flow equations always exist (possibly up to isolated submanifolds). If the first-order equations factorise in a specific way, they take a form that has been named fake supersymmetry. We point out that this factorisation is always possible at zero temperature. We therefore propose a less generic definition of fake supersymmetry, which involves the boundary conditions in a non-trivial way, and we analyse its physical relevance. For instance attractor flows are necessarily fake supersymmetric in our restricted sense. To illustrate the definition we provide new analytic solutions for axion-dilaton domain walls with fake superpotentials that were argued not to exist.

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